1/2" Screw, 0.529" ID, Spring Steel Internal Tooth Lock Washer MPN:SIWIS050HDUSA-0

Secure your fastenings with the power of a industrial strength spring steel internal tooth lock washer, designed for use with screws ranging from 1/2 in diameter with an inner diameter of 0.529. The internal teeth bite into the head of the screw, preventing it from loosening even under extreme conditions while remaining corrosion resistant; perfect for outdoor applications or situations where rust is an issue. A trusty component in aerospace, automotive and mechanical industries, our spring steel lock washer provides unrivaled secure fastening without compromise.