Enhance the security of your fastening applications with our External Tooth Lock Washer. Crafted from durable steel with a protective zinc coating, this washer ensures reliable performance even in demanding environments. Measuring .373 inches in outside diameter and .021 inches in thickness, it provides a secure grip and prevents loosening of screws and bolts. Designed for #8 hole sizes, with an inside diameter of .172 inches, it offers a perfect fit for your assembly needs. Rest assured, this washer is compliant with RoHS regulations, making it an environmentally friendly choice for your projects. Trust in its ASME B18.21.1 specification for quality and performance assurance. Upgrade your fastening solutions with this essential component.