External Lock Washers

External lock washers have tooth structures on the external side of the washer body. They require large head of the screw as those tooth structures must make contacts with head in order to provide higher twisting resistance. It is preferd when loosening resistance is required.

Cold Forged Fasteners, Hot Forged Fastener, C-Machined External Lock Washers, CNC Machined External Lock Washers, Custom Machined External Lock Washers, Threaded External Lock Washers, Non-Threaded External Lock Washers, Bar Stock Machined External Lock Washers.