Toothed Washers

Toothed washers can have external or internal teeth, or both, and can be provided as countersunk to order.
A toothed washer with external teeth holds teeth that are twisted to grip and extend radially outwards, to bite into the bearing surface and is effective as a lock washer when used with soft substrates like aluminium or plastic.
A toothed washer with internal teeth has teeth that extend radially inward to bite into the bearing surface and the internal serration makes the washer look more aesthetically pleasing.
There is also a countersunk toothed washer, which is designed to be used with countersunk screws in a countersunk hole assisting with locking in the screw.
Should your application require it, we can also supply a toothed internal external combined washer which has teeth around both edges. The teeth are twisted to grip and extend radially inward and outward for maximum holding power.
Available in a range of sizes and materials, with specials made to order.
Technical Data & Available Sizes