Ensure maximum security with this Internal Tooth Lockwasher, designed to prevent loosening of fasteners in industrial applications. Crafted from durable steel with a black oxide finish, it is not only resilient to wear and corrosion but also provides a sleek appearance. With an outside diameter of .312 inches and a thickness of .02 inches, this lockwasher is suitable for #6 hole sizes. Its internal teeth effectively grip onto screws or bolts, offering reliable locking capabilities. Compliant with RoHS regulations, this essential component guarantees both performance and environmental responsibility. Perfect for ensuring stability in machinery and equipment, it is a must-have in any toolkit.