Ensure maximum security and stability with this External Tooth Lock Washer. Crafted from durable steel with a nickel finish coating, it offers reliable performance in a variety of applications. Compliant with DIN 6797A specifications, this washer features an outside diameter of 8mm and a thickness of 0.5mm, making it ideal for use with M4 hole sizes. The precisely engineered design includes external teeth for a secure grip, while the 4.3mm inside diameter ensures a perfect fit. Rest assured of its quality and safety as it is fully ROHS compliant. Perfect for industrial, automotive, and household projects, this washer is a must-have for any toolkit.