Enhance the security of your fastening applications with this durable Internal Tooth Lockwasher. Crafted from high-quality stainless steel, it ensures reliable performance and corrosion resistance. With an outside diameter of .682 inches and a thickness of .036 inches, it is designed to fit perfectly with a hole size of 3/8 inch. The precise inside diameter of .391 inches guarantees a snug and secure fit for your fasteners. Rest assured, this lockwasher is compliant with RoHS regulations, making it a responsible choice for your projects. Trust in its effectiveness to prevent loosening and maintain the integrity of your assemblies.