Enhance the security of your fastening applications with this Internal Tooth Lockwasher. Crafted from durable brass with a sleek nickel finish coating, this washer offers reliable performance and corrosion resistance. With a thickness of .015 inches and an inside diameter of .119 inches, it is designed to fit snugly around #4 screws, providing a tight and secure hold. Its precise engineering ensures optimal functionality, making it a valuable addition to your hardware arsenal. Rest assured, this product is fully compliant with RoHS regulations, meeting high standards of environmental responsibility. Upgrade your fastening system with this essential accessory, guaranteeing peace of mind in your industrial or DIY projects.