Enhance the security of your fastening applications with this Internal Tooth Lockwasher. Crafted from durable steel and coated in yellow zinc for added protection against corrosion, this washer ensures reliable performance. With an outside diameter of 1.058 inches and a thickness of .046 inches, it is suitable for various industrial and DIY projects. The precisely engineered inside diameter of .652 inches and hole size of 5/8 inches guarantee a perfect fit. Rest assured, this washer complies with RoHS regulations, making it an environmentally friendly choice for your hardware needs. Upgrade your fastening system with this high-quality lockwasher.