This Internal Tooth Lockwasher is crafted from high-quality Phosphor Bronze, offering excellent corrosion resistance and durability for various applications. With a precise outside diameter of .312 inches and a thickness of .02 inches, it provides reliable locking and sealing capabilities. The internal tooth design ensures a secure fit, making it ideal for use in conjunction with #6 size screws. Featuring RoHS compliance, this washer meets environmental standards while delivering optimal performance. Its precise inside diameter of .146 inches guarantees a perfect fit, enhancing the overall efficiency and longevity of your assembly. Trust in this meticulously engineered component to enhance the functionality and reliability of your projects.