Midwest Fastener 5/16 in. External Tooth Lock Washer

The Midwest Fastener 5/16 in. External Tooth Lock Washer is designed to provide secure holding power in various fastening applications. Engineered with external teeth that bite into mating surfaces, this lock washer helps prevent loosening caused by vibration, movement, or torque stress. Constructed from durable steel with a protective zinc finish, this washer offers strength and corrosion resistance. It is suitable for automotive, mechanical, and general hardware fastening needs.