External Tooth Lock Washers
External tooth lock washers are a type of lock washer that is designed to provide a secure grip between the nut or bolt head and the mating surface. They feature teeth or serrations on the outside diameter, which grip the surface of the material and prevent the nut or bolt head from turning. External tooth lock washers are commonly used in applications where the connection may be subjected to vibrations or other external forces that could cause the nut or bolt to loosen.
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