Enhance the security of your fastening applications with our Stainless Steel External Tooth Lock Washer. Designed to prevent loosening and maintain tight connections, this washer features a precise ASME B18.21.1 specification for reliable performance. With an outside diameter of .252 inches and a thickness of .015 inches, it offers a perfect fit for #4 hole sizes. The internal diameter of .119 inches ensures compatibility with various fasteners. Crafted from durable stainless steel, it provides corrosion resistance and long-lasting durability. Rest assured, this washer is RoHS compliant, making it a sustainable choice for your projects. Upgrade your assembly process with this essential component for effective fastening solutions.