Enhance the security of your fastening applications with our External Tooth Lock Washer. Designed to prevent loosening and provide a reliable grip, this essential component meets ASME B18.21.1 specifications for quality assurance. Crafted from durable steel with a yellow zinc finish coating, it offers both strength and corrosion resistance. With an outside diameter of .373 inches and a thickness of .021 inches, it is suitable for a variety of #8 hole sizes. The precise .172-inch inside diameter ensures a snug fit, making it ideal for industrial and DIY projects alike. Rest assured, this washer is fully compliant with RoHS regulations, making it a responsible choice for environmentally conscious consumers. Upgrade your toolkit with this essential fastening solution for added peace of mind.