Ensure secure fastening with this Internal Tooth Lockwasher. Made of durable steel with a yellow zinc finish coating, it provides reliable protection against corrosion. With an outside diameter of .312 inches and a thickness of .02 inches, it is designed for optimal performance. The internal tooth design offers enhanced grip, while the #6 hole size and .146-inch inside diameter make it suitable for a variety of applications. Compliant with RoHS regulations, this lockwasher is a dependable choice for your industrial needs.