Enhance the security of your fastening applications with our External Tooth Lock Washer. Crafted from durable steel with a protective zinc coating, this washer ensures reliable performance in a variety of environments. Measuring .501 inches in outside diameter and .025 inches in thickness, it is designed to accommodate a 1/4 inch hole size. The ASME B18.21.1 specification guarantees quality and precision, while the .262 inch inside diameter provides a snug fit for your fasteners. Non-rohs compliant. Upgrade your assembly process with this essential component for optimal stability and peace of mind.