Ensure secure fastening with this External Tooth Lock Washer. Made of durable 316 Stainless Steel, it provides reliable locking action for #6 hole sizes. With an outside diameter of .312 inches and a thickness of .02 inches, it meets ASME B18.21.1 specifications. The precision design features external teeth for enhanced grip, while the inside diameter of .146 inches allows for proper alignment. RoHS compliant, this washer guarantees both performance and environmental responsibility in your assembly projects.