Ensure optimal fastening performance with this Internal Tooth Lockwasher. Crafted from durable steel with a protective zinc coating, this washer guarantees long-lasting reliability. With an outside diameter of .252 inches and a thickness of .015 inches, it is designed for precision applications. The internal teeth provide a secure grip, preventing loosening over time. Its #4 hole size and .119-inch inside diameter make it compatible with a variety of fasteners. Rest easy knowing this washer is RoHS compliant, meeting strict environmental standards. Perfect for industrial or DIY use, it's an essential component for any project requiring secure fastening.