Enhance the security of your fastening applications with our External Tooth Lock Washer. Designed to provide reliable locking action, this washer is a crucial component for preventing loosening and ensuring stability. Crafted from durable 400 Series Stainless Steel, it offers exceptional corrosion resistance and longevity. With an ASME B18.21.1 specification, you can trust in its high-quality performance. Featuring an outside diameter of .501 inches and a thickness of .025 inches, it is suitable for various industrial and commercial uses. The precise inside diameter of .262 inches and hole size of 1/4 inch ensure a perfect fit with corresponding bolts or screws. Rest assured of its compliance with RoHS standards, making it environmentally friendly. Upgrade your fastening system with this essential External Tooth Lock Washer.