There are various kinds of Metal Washers that are thin plate with a hole that is normally used to distribute the load of a threaded fastener, such as a bolt or nut. Other uses are as a spacer, spring, wear pad, preload indicating device, locking device, and to reduce vibration. These washers provide grip, act as a shim or spacer, allow for better clearance, and help to prevent galvanic corrosion. The primary purpose of most washers is to evenly distribute the load of the threaded fastener with which they are used. The Metal Washers are very efficient and made in various sizes.