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Internally serrated washers. Also known as shake-proof washers, serrated lock washers, or tooth lock washers.

Metric - BZP Grade 4.6 Internal Fine Serrated Tooth Locking Washers - DIN 6798J

Internally serrated washers in various diameters at great prices.  Manufactured from grade 4.6 with a bright zinc plating (BZP) for mid-level corrosion protection. A washer with a set of teeth on the internal edge bites into the surface of the material and fastener helping to stop the fastener from becoming loose over time. Also known as shake-proof washers, serrated lock washers, or tooth lock washers, the internal teeth allow for a cleaner finish if needed.

Conforms to DIN 6798J and are available in a selection of diameters at great prices with bulk discounts available.

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