Lock washers known as split lock washers place tension against a nut after tightening, to help prevent the nut from loosening. They provide a more uniform load distribution, and are great for any indoor/outdoor project. 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. Steel is zinc plated for moderate protection against rust. Use hot dipped galvanized finish or stainless steel where corrorsion and rust is of concern or in exterior projects.
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