Keep your fasteners secure with our Internal Tooth Lockwasher. Made of durable steel with a protective zinc finish coating, these washers ensure a reliable grip in a wide range of applications. With an outside diameter of 1.24 inches and a thickness of .051 inches, they provide sturdy support. The internal tooth design enhances grip on fasteners, while the .782-inch inside diameter and 3/4 inch hole size offer versatility. Rest assured, these washers are RoHS compliant, meeting environmental standards. Upgrade your fastening system with these high-quality lockwashers.