Enhance the security of your fastening applications with our Internal Tooth Lockwasher. Made of durable steel with a yellow zinc finish coating, it offers reliable protection against loosening. Featuring an outside diameter of 1.24 inches and a thickness of .051 inches, this lockwasher ensures a snug fit. With an inside diameter of .782 inches and a hole size of 3/4, it is compatible with a variety of bolts and screws. Rest assured of its compliance with RoHS standards, making it an environmentally friendly choice for your projects. Keep your connections secure with this essential hardware component.