Spring Lock Washers,known as split lock washers,are engineered to provide a more uniform load distribution. Ideal for situations where potential loosening from corrosion or vibration is a concern. Lock washers provide a locking spring action and are used to prevent nuts and bolts from coming loose from vibrations. They have split ends that help lock into the mating material, thus providing a locking feature when tightened beneath a nut. Hot dipped galvanized (HDG) provides one of the highest degree of corrosion-resistance of all mechanically plated fasteners. Used predominately in exterior applications where prolonged exposure to the elements are present. Ideal for marine applications such as docks and piers as well as landscaping projects including decks, fences, retaining walls, and more.