{"title":"Internal Tooth Shakeproof Washers A2 (304) Stainless Steel - DIN 6797J","description":"\u003ch2\u003e\u003cstrong\u003eCorrosion resistant locking washer\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA range of internal tooth shakeproof locking washers manufactured in A2 stainless steel for high corrosion resistance.\u003c\/p\u003e\n\u003cp\u003eDesigned for a secure, vibration-resistant fastening for industrial and engineering applications. A washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003c\/p\u003e\n\u003cp\u003eIdeal for internal and external used by both professionals and DIY enthusiasts alike.\u003c\/p\u003e\n\u003cp\u003ePart of a growing range of \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003eserrated locking washers from Fusion Fixings\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"m2-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M2 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile locking washer used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality\u003c\/strong\u003e: Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M2\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e2.34mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED):\u003c\/strong\u003e 4.50mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT): \u003c\/strong\u003e0.3mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations\u003cstrong\u003e (WT1): \u003c\/strong\u003e0.6mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 6\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile locking washer used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eLocking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality: \u003c\/strong\u003eManufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eLocking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD):\u003c\/strong\u003e To fit M2.5\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e2.84mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED):\u003c\/strong\u003e 5.50mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT):\u003c\/strong\u003e 0.4mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1):\u003c\/strong\u003e 0.8mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 6\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile\u003ca rel=\"noopener\" href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" target=\"_blank\"\u003e locking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShakeproof locking washer specifications\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M3 - 3mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID):\u003c\/strong\u003e 3.38mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED):\u003c\/strong\u003e 6mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT):\u003c\/strong\u003e 0.4mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations (WT1): 0.8mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 6\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003elocking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: \u003c\/strong\u003eInternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize\u003cstrong\u003e (TD): \u003c\/strong\u003eTo fit M3.5 - 3.5mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID):\u003c\/strong\u003e 3.88mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED):\u003c\/strong\u003e 7mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT):\u003c\/strong\u003e 0.5mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations\u003cstrong\u003e (WT1):\u003c\/strong\u003e 1mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 6\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":56797963256191,"sku":"INTSPW-MA2-035","price":0.11,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":56797964075391,"sku":"INTSPW-MA2-035","price":0.07,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 25","offer_id":56797967090047,"sku":"INTSPW-MA2-035","price":0.04,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":56797968826751,"sku":"INTSPW-MA2-035","price":0.02,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 100","offer_id":56797972300159,"sku":"INTSPW-MA2-035","price":0.01,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 200","offer_id":56797976953215,"sku":"INTSPW-MA2-035","price":1.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813462"},{"product_id":"m4-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M4 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003elocking washer\u003c\/a\u003e used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: \u003c\/strong\u003eInternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M4 - 4mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e4.48mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED):\u003c\/strong\u003e 8mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT): \u003c\/strong\u003e0.5mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1):\u003c\/strong\u003e 1mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 8\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\"\u003elocking washer\u003c\/a\u003e used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: \u003c\/strong\u003eInternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD):\u003c\/strong\u003e To fit M5 - 5mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID):\u003c\/strong\u003e 5.48mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED):\u003c\/strong\u003e 10mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness \u003cstrong\u003e(WT):\u003c\/strong\u003e 0.6mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations\u003cstrong\u003e (WT1): \u003c\/strong\u003e1.2mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 8\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/internal-tooth-shakeproof-washers-a2-304-stainless-steel-din-6797j-1\" rel=\"noopener\" target=\"_blank\"\u003elocking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: \u003c\/strong\u003eInternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize\u003cstrong\u003e (TD): \u003c\/strong\u003eTo fit M6 - 6mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter\u003cstrong\u003e (ID): \u003c\/strong\u003e6.62mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED): \u003c\/strong\u003e11mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT): \u003c\/strong\u003e0.7mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations\u003cstrong\u003e (WT1):\u003c\/strong\u003e 1.4mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 8\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003eCan these tooth lock washers be reused?\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":56798030102911,"sku":"INTSPW-MA2-06","price":0.11,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":56798030168447,"sku":"INTSPW-MA2-06","price":0.07,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 25","offer_id":56798030463359,"sku":"INTSPW-MA2-06","price":0.04,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":56798030659967,"sku":"INTSPW-MA2-06","price":0.02,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 100","offer_id":56798030791039,"sku":"INTSPW-MA2-06","price":0.01,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 200","offer_id":56798030856575,"sku":"INTSPW-MA2-06","price":1.64,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 1000","offer_id":56798031053183,"sku":"INTSPW-MA2-06","price":5.8,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 5000","offer_id":56798035739007,"sku":"INTSPW-MA2-06","price":26.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813462"},{"product_id":"m7-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M7 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch3\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile\u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003e locking washer\u003c\/a\u003e used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality: \u003c\/strong\u003eManufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M7 - 7mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e7.62mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED): \u003c\/strong\u003e12.50mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT):\u003c\/strong\u003e 0.8mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e1.6mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 8\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003elocking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize\u003cstrong\u003e (TD):\u003c\/strong\u003e To fit M8 - 8mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter\u003cstrong\u003e (ID): \u003c\/strong\u003e8.62mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED): \u003c\/strong\u003e15mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT):\u003c\/strong\u003e 0.8mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e1.6mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 8\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile locking washer used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: \u003c\/strong\u003eInternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize\u003cstrong\u003e (TD): \u003c\/strong\u003eTo fit M10 - 10mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID):\u003c\/strong\u003e 10.77mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED): \u003c\/strong\u003e18mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT):\u003c\/strong\u003e 0.9mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e1.8mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 9\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Default Title","offer_id":56798457921919,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813462"},{"product_id":"m12-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M12 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" target=\"_blank\"\u003elocking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality: \u003c\/strong\u003eManufactured to DIN 6797J standards.\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M12 - 12mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter (ID): 13.27mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED): \u003c\/strong\u003e20.50mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness \u003cstrong\u003e(WT):\u003c\/strong\u003e 1mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e2mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 10\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":56799177671039,"sku":"INTSPW-MA2-12","price":0.13,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":56799177736575,"sku":"INTSPW-MA2-12","price":0.09,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 25","offer_id":56799178064255,"sku":"INTSPW-MA2-12","price":0.06,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":56799178129791,"sku":"INTSPW-MA2-12","price":0.04,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 100","offer_id":56799178195327,"sku":"INTSPW-MA2-12","price":0.03,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 200","offer_id":56799178228095,"sku":"INTSPW-MA2-12","price":4.6,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 2000","offer_id":56799178359167,"sku":"INTSPW-MA2-12","price":41.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE_744db17e-2bbe-4c35-8305-94322516439d.png?v=1768829332"},{"product_id":"m14-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M14 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003elocking washer\u003c\/a\u003e used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: \u003c\/strong\u003eInternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality: \u003c\/strong\u003eManufactured to DIN 6797J standards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M14 - 14mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter\u003cstrong\u003e (ID): \u003c\/strong\u003e15.27mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED): \u003c\/strong\u003e24mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT):\u003c\/strong\u003e 1mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations\u003cstrong\u003e (WT1):\u003c\/strong\u003e 2mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 10\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs about internal tooth shakeproof locking washer\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":56799178588543,"sku":"INTSPW-MA2-14","price":0.14,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":56799178654079,"sku":"INTSPW-MA2-14","price":0.1,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 25","offer_id":56799178785151,"sku":"INTSPW-MA2-14","price":0.07,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":56799178883455,"sku":"INTSPW-MA2-14","price":0.05,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 100","offer_id":56799178981759,"sku":"INTSPW-MA2-14","price":0.04,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 200","offer_id":56799179014527,"sku":"INTSPW-MA2-14","price":6.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813462"},{"product_id":"m16-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M16 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile locking washer used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: \u003c\/strong\u003eInternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality: \u003c\/strong\u003eManufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD):\u003c\/strong\u003e To fit M16 - 16mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e17.27mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED): \u003c\/strong\u003e26mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness \u003cstrong\u003e(WT): \u003c\/strong\u003e1.2mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e2.4mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 12\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":56799179407743,"sku":"INTSPW-MA2-16","price":0.14,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":56799179735423,"sku":"INTSPW-MA2-16","price":0.1,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 25","offer_id":56799180194175,"sku":"INTSPW-MA2-16","price":0.07,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":56799180292479,"sku":"INTSPW-MA2-16","price":0.05,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 200","offer_id":56799181275519,"sku":"INTSPW-MA2-16","price":0.04,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 1000","offer_id":56799182324095,"sku":"INTSPW-MA2-16","price":36.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813462"},{"product_id":"m18-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M18 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003elocking washer\u003c\/a\u003e used by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize\u003cstrong\u003e (TD): \u003c\/strong\u003eTo fit M18 - 18mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e19.33mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED):\u003c\/strong\u003e 30mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness (WT): 1.4mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e2.8mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 12\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003elocking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design\u003c\/strong\u003e: Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile: \u003c\/strong\u003ePerfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M20 - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca rel=\"noopener\" href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" target=\"_blank\"\u003elocking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor \u003cstrong\u003eand\u003c\/strong\u003e outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize\u003cstrong\u003e (TD):\u003c\/strong\u003e To fit M24 - 24mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e25.33mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter\u003cstrong\u003e (ED):\u003c\/strong\u003e 38mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness \u003cstrong\u003e(WT):\u003c\/strong\u003e 1.5mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e3mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 14\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":56799189565823,"sku":"INTSPW-MA2-24","price":0.24,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":56799189664127,"sku":"INTSPW-MA2-24","price":0.19,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 25","offer_id":56799189729663,"sku":"INTSPW-MA2-24","price":0.15,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":56799189827967,"sku":"INTSPW-MA2-24","price":0.12,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 100","offer_id":56799189893503,"sku":"INTSPW-MA2-24","price":0.1,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 500","offer_id":56799189959039,"sku":"INTSPW-MA2-24","price":47.5,"currency_code":"GBP","in_stock":true},{"title":"Bundle - 2000","offer_id":56799190221183,"sku":"INTSPW-MA2-24","price":169.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813462"},{"product_id":"m27-internal-tooth-shakeproof-locking-washer-a2-304-stainless-steel-din-6797j","title":"M27 Internal Tooth Shakeproof Locking Washer A2 (304) Stainless Steel, DIN 6797J","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion resistant internal locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eShakeproof locking washer designed for a secure, vibration-resistant fastening for industrial and engineering applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA washer that features multiple internal teeth that bite into the underside of a fastener creating a secure grip that helps prevent loosening from vibration. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more of an aesthetically pleasing finish than the external tooth variety and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth washers.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThis shakeproof washer conforms to DIN 6797J and are manufactured from A2 stainless steel for high corrosion resistance. This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" rel=\"noopener\" target=\"_blank\"\u003eserrated locking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design:\u003c\/strong\u003e Internal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant:\u003c\/strong\u003e A2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize \u003cstrong\u003e(TD): \u003c\/strong\u003eTo fit M27 - 27mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e28.33mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED):\u003c\/strong\u003e 44mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness \u003cstrong\u003e(WT):\u003c\/strong\u003e 1.6mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1): \u003c\/strong\u003e3.2mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 14\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 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This makes them ideal for both internal and external conditions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA versatile \u003ca rel=\"noopener\" href=\"https:\/\/www.fusionfixings.co.uk\/collections\/shake-proof-lock-washers\" target=\"_blank\"\u003eserrated locking washer \u003c\/a\u003eused by both DIY enthusiasts and professional alike for numerous applications. These include mechanical, electrical, automotive, and general industrial use. \u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer key benefits\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Loosening Design: I\u003c\/strong\u003enternal serrated teeth provide reliable locking action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistant: \u003c\/strong\u003eA2 (304) grade stainless steel that offers strong corrosion resistance, great for indoor and outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardised quality:\u003c\/strong\u003e Manufactured to DIN 6797J standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile:\u003c\/strong\u003e Perfect for assemblies facing vibration, motion or temperature changes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eShakeproof locking washer specifications\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize\u003cstrong\u003e (TD): \u003c\/strong\u003eTo fit M30 - 30mm\u003c\/li\u003e\n\u003cli\u003eInternal diameter \u003cstrong\u003e(ID): \u003c\/strong\u003e31.39mm max\u003c\/li\u003e\n\u003cli\u003eExternal diameter \u003cstrong\u003e(ED): \u003c\/strong\u003e48mm max\u003c\/li\u003e\n\u003cli\u003eWasher thickness\u003cstrong\u003e (WT): \u003c\/strong\u003e1.6mm\u003c\/li\u003e\n\u003cli\u003eWasher thickness including serrations \u003cstrong\u003e(WT1):\u003c\/strong\u003e 3.2mm\u003c\/li\u003e\n\u003cli\u003eNumber of teeth: 14\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Natural stainless\u003c\/li\u003e\n\u003cli\u003eTeeth Type: Internal serrated \/ tooth\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQs about internal tooth shakeproof locking washer\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is an internal tooth washer and how does it work?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers are serrated locking washers with inward-facing teeth that grip the fastener shaft to resist loosening from vibration.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre internal tooth washers better than external tooth washers?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eInternal tooth washers offer a more aesthetically pleasing finish and are ideal where the grip on the fastener shaft is needed, though they generally have a slightly smaller bite area compared with external teeth. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does A2 stainless steel mean?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA2 stainless steel refers to the commonly used 304 grade steel that offers good corrosion resistance and mechanical strength for general-purpose and outdoor applications. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these tooth lock washers be reused?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlthough they can be removed and inspected, reuse is not recommended if the teeth are deformed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I choose the right size?\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the washer to the thread size of the bolt or screw you’re using (e.g., M5 washer for M5 fastener) and check the internal\/outer diameters on this product page.\u003cbr\u003e\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":56799191531903,"sku":"INTSPW-MA2-30","price":0.38,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":56799192187263,"sku":"INTSPW-MA2-30","price":0.29,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 25","offer_id":56799192285567,"sku":"INTSPW-MA2-30","price":0.25,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":56799192547711,"sku":"INTSPW-MA2-30","price":0.22,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 100","offer_id":56799192678783,"sku":"INTSPW-MA2-30","price":0.2,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 500","offer_id":56799192809855,"sku":"INTSPW-MA2-30","price":0.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813462"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/collections\/6797J-tooth-washer-700-700-USE-collection.png?v=1768813476","url":"https:\/\/www.fusionfixings.co.uk\/collections\/internal-tooth-shakeproof-washers-a2-304-stainless-steel-din-6797j-1.oembed","provider":"Fusion Fixings","version":"1.0","type":"link"}