Enhance the security of your fastening systems with our External Tooth Lock Washer. Crafted from durable steel with a sleek black oxide finish, this washer ensures reliable performance and corrosion resistance. Designed to ASME B18.21.1 specifications, it features an outside diameter of 0.373 inches and a thickness of 0.021 inches. With an inside diameter of 0.172 inches and a hole size of #8, it's perfect for a variety of applications. Rest assured, this washer is RoHS compliant, meeting stringent environmental standards. Upgrade your assembly process with this essential component for a secure and efficient result.