Enhance the security of your fastening applications with our External Tooth Lock Washer. Crafted from durable 304 Stainless Steel, this washer ensures long-lasting performance even in demanding environments. With a precise outside diameter of .501 inches and a thickness of .025 inches, it provides a perfect fit for your assembly needs. Compliant with ASME B18.21.1 specifications, it guarantees quality and reliability. The toothed design offers superior grip, preventing loosening over time. Its inside diameter of .262 inches and hole size of 1/4 inch make it ideal for various tasks. Rest assured of its environmental friendliness with RoHS compliance. Trust in the efficiency and effectiveness of this essential locking component for your projects.