{"product_id":"m12-x-40mm-carriage-bolt-coach-bolt-a2-stainless-steel-din-603","title":"M12 x 40mm Carriage bolt (Coach Bolt), A2 (304) Stainless Steel, DIN 603","description":"\u003ch2\u003e\n\u003cstrong\u003eCorrosion Resistant Carriage Bolt\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eCarriage bolt with a smooth head, no drive recess for security, and a square neck beneath the head that prevents rotation when tightened from the back.\u003c\/p\u003e\n\u003cp\u003eThe square neck under the rounded head locks into wood or metal. This prevents rotation during installation which allows easy one-sided fastening.\u003c\/p\u003e\n\u003cp\u003eThe smooth round head allows for a clean finish and with no drive recess restricts the bolt from being removed or tampered with without clear access to the back.\u003c\/p\u003e\n\u003cp\u003eThis adds an element of security to applications where disassembly should be restricted. A combination that sees these coach bolts widely used and being manufactured from A2 stainless steel makes them versatile for both internal and external uses.\u003c\/p\u003e\n\u003cp\u003eKnown in the trade as carriage bolts, coach bolts, cup square carriage bolts, and used by DIY enthusiasts and professionals alike.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eM12 Carriage Bolt Specification\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDiameter \u003cstrong\u003e(TD): \u003c\/strong\u003eM12 - 12mm\u003c\/li\u003e\n\u003cli\u003eNeck width \u003cstrong\u003e(NW): \u003c\/strong\u003e12.70mm max\u003c\/li\u003e\n\u003cli\u003eNeck depth \u003cstrong\u003e(ND):\u003c\/strong\u003e 8.75mm max\u003c\/li\u003e\n\u003cli\u003eLength \u003cstrong\u003e(L):\u003c\/strong\u003e 40mm\u003c\/li\u003e\n\u003cli\u003eHead width \u003cstrong\u003e(HW):\u003c\/strong\u003e 30.65mm max\u003c\/li\u003e\n\u003cli\u003eDome head height\u003cstrong\u003e (HH):\u003c\/strong\u003e 6.95mm max\u003c\/li\u003e\n\u003cli\u003eThread pitch: 1.75mm\u003c\/li\u003e\n\u003cli\u003eMaterial: A2 stainless steel\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDon’t forget the hex nuts\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDo you need the hex nuts for use with these carriage bolts? If so, see our stainless steel \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/metric-a2-stainless-steel-full-hex-nuts\/products\/m12-full-nut-a2-stainless-steel-din-934\" rel=\"noopener\" target=\"_blank\"\u003eM12 hex nut.\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe M12 carriage bolt is part of a larger range of \u003ca href=\"https:\/\/www.fusionfixings.co.uk\/collections\/carriage-bolts\" rel=\"noopener\" target=\"_blank\"\u003ecarriage bolts \/ coach bolts\u003c\/a\u003e available at competitive prices with bulk price discounts\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQs about Coach Bolts (Carriage Bolts)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhere are carriage bolts commonly used?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese bolts are most commonly used to fix wood to wood or wood to metal structures such as decks, garden furniture, timber frames, fencing, and structural joinery. The square neck, below the head, locks into the material and prevents the bolt from spinning when tightened.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the square neck benefit installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe square neck under the domed head bites into timber or a square hole, providing anti-rotation while tightening the nut. This means you often don’t need a tool on the bolt head as the square neck holds the bolt in place, making assembly easier.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this bolt without a pre-drilled hole?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufactured with a flat end, these bolts need a predrilled hole through the material that matches the M12 diameter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these Coach Bolts be used outdoors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese Coach Bolts are manufactured in A2 stainless steel with a high level of corrosion resistance making them ideal for both internal and external applications.\u003c\/p\u003e","brand":"Fusion Fixings","offers":[{"title":"Qty Price Break - 1","offer_id":54864425681279,"sku":"CSCB-MA2-1240","price":1.1,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 10","offer_id":54864426238335,"sku":"CSCB-MA2-1240","price":1.03,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 50","offer_id":54864426303871,"sku":"CSCB-MA2-1240","price":0.97,"currency_code":"GBP","in_stock":true},{"title":"Qty Price Break - 200","offer_id":54864426402175,"sku":"CSCB-MA2-1240","price":0.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/6090\/6293\/files\/carriagebolt-coachbolt.png?v=1770886959","url":"https:\/\/www.fusionfixings.co.uk\/products\/m12-x-40mm-carriage-bolt-coach-bolt-a2-stainless-steel-din-603","provider":"Fusion Fixings","version":"1.0","type":"link"}