Ensure secure fastening with this Internal Tooth Lockwasher. Crafted from durable 410 Stainless Steel, it guarantees lasting performance even in demanding environments. With a thickness of .02 inches and an outside diameter of .312 inches, it provides reliable reinforcement to prevent loosening of components. The precise inside diameter of .146 inches and hole size #6 make it compatible with a variety of applications. Rest assured of its quality and compliance with RoHS standards, making it an eco-friendly choice for your projects.