Enhance the security of your fastening applications with our Internal Tooth Lockwasher. Crafted from durable steel with a zinc finish coating, it ensures reliable performance in various environments. With an outside diameter of .089 inches and a thickness of .041 inches, it provides a snug fit for your assembly. The internal teeth grip tightly, preventing loosening due to vibrations or movements. Designed for a hole size of 1/2 inch and meeting RoHS compliance standards, it offers both convenience and eco-friendliness in one essential component. Trust in the quality and effectiveness of this lockwasher to keep your connections secure.