5/16 Internal Tooth Lock Washer Black Zinc and Bake M10-1.50 It has a square shape

It has a square shape and is designed to be used with 5/16-18 machine screws

With its precision-machined threads and smooth finish

This lock nut is ideal for use in a variety of applications

It is made from steel and has a zinc coating for corrosion resistance

while the 3/8" center hole accommodates bolts or screws

5/16 Internal Tooth Lock Washer Black Zinc and Bake M10-1.50 It has a square shape**5 16 Internal Tooth Lock Washer Black Zinc and Bake** These 5 16" internal tooth lock washers are made of durable steel and feature a black zinc and bake finish for corrosion resistance. They are designed to prevent nuts and bolts from loosening due to vibration or movement. The internal teeth bite into the mating surface, creating a secure hold. These washers are ideal for use in automotive, industrial, and construction applications. **Features:**