Enhance the security of your fastening applications with this durable External Tooth Lock Washer. Crafted from high-quality steel and coated with zinc for added protection against corrosion, this washer ensures reliable performance in various environments. Its ASME B18.21.1 specification guarantees compliance with industry standards, while its precise dimensions, including an outside diameter of .467 inches and a thickness of .024 inches, offer a perfect fit for #12 hole sizes. The external tooth design provides a tight grip and prevents loosening, making it ideal for heavy-duty industrial use. Rest assured of its environmental safety, as it is RoHS compliant. Upgrade your fastening system with this essential component for optimal efficiency and security.