Enhance fastening security with this durable Internal Tooth Lockwasher. Crafted from high-quality Stainless Steel, it ensures long-lasting performance in various industrial applications. With an outside diameter of .089 inches and a thickness of .041 inches, it offers a snug fit for optimal effectiveness. The inside diameter of .522 inches and hole size of 1/2 inch make it suitable for a range of fastening needs. Compliant with RoHS standards, it meets environmental responsibilities without sacrificing quality. Upgrade your fastening solutions with this reliable Internal Tooth Lockwasher.