Midwest Fastener 5/16 in. Split Lock Washer

The Midwest Fastener 5/16 in. Split Lock Washer is engineered to provide reliable tension and prevent threaded fasteners from loosening due to vibration or movement. Designed with a split helical shape, it exerts continuous spring force against bolt heads and nuts for a secure hold. Constructed from durable steel with a bronze finish, this lock washer offers dependable strength and performance for a wide range of general hardware, mechanical, and automotive fastening applications.