Enhance the security of your fastening applications with this Internal Tooth Lockwasher. Crafted from durable Phosphor Bronze, it ensures reliable performance and longevity. With an outside diameter of 0.6 inches, inside diameter of 0.326 inches, and a hole size of 5/16, this lockwasher is designed to suit specific requirements. The 0.031-inch thickness provides robust locking capabilities. Whether for industrial or personal use, this lockwasher guarantees effective fastening while meeting high-quality standards. Please note that it does not comply with RoHS regulations.