Enhance the security of your fastening applications with our Internal Tooth Lockwasher. Designed for reliable performance, this essential component features a durable steel construction with a protective zinc coating, ensuring long-lasting strength and corrosion resistance. With an outside diameter of .682 inches and a thickness of .036 inches, it provides a perfect fit for various industrial and commercial uses. The internal diameter of .391 inches and a hole size of 3/8 inch offer compatibility with standard fasteners. Rest assured, our lockwasher meets all necessary quality standards for your peace of mind. Elevate the efficiency and safety of your assembly processes with this essential hardware.