Galvanized Split Lock Washers
Hot-dipped galvanized hardened steel. Suitable for use in treated lumber, boat lifts, and boat lift hoists. Used with nuts and bolts to help keep the bolt from unthreading from the nut. All lock washers weigh less than a pound. Different sized lock washers for different sizes of nuts and bolts. Lock washers have a split designed to grab ahold of the threads of the bolt.