Enhance the security of your fastening applications with our Internal Tooth Lockwasher. Made of durable steel with a zinc finish coating, it ensures reliable performance in various environments. With an outside diameter of 1.058 inches and a thickness of .046 inches, it provides a snug fit for your assembly. The internal diameter of .652 inches and hole size of 5/8 inch make it compatible with standard fasteners. Rest assured, this lockwasher is RoHS compliant, meeting environmental standards. Upgrade your hardware with this essential component for added peace of mind.