Ensure secure fastening with this Internal Tooth Lockwasher. Made from durable steel with a sleek finish, it offers reliable performance for a wide range of applications. With an outside diameter of .252 inches and a thickness of .015 inches, it provides a perfect fit for #4 size holes. The internal teeth design enhances grip and prevents loosening, offering peace of mind in any assembly. RoHS compliance guarantees its environmental friendliness, making it a responsible choice for your projects. Trust in the quality and functionality of this essential hardware component.