External Teeth lock washers

Listing ID #3419827

Externall teeth lock washer has serrations on the outer edge, which provides better holding power, because of the greater circumference.This type of washer is especially effective as a lock washer when used with a soft substrate, such as aluminium or plastic,and can resist rotation more than a plain washer on hard surfaces, as the tension between washer and the surface is applied over a much smaller area (the teeth).