The .812-1.469 MS27183 Military Flat Washer Cadmium is a thin, flat, circular piece of metal with a hole in the center. It is used to distribute the load of a bolt or screw over a larger surface area, preventing the bolt or screw from pulling through the material it is being fastened to. The washer is made of cadmium-plated steel, which provides corrosion resistance and increased strength. It has a diameter of .812-1.469 inches and a thickness of .025 inches. The washer meets the specifications of Military Standard MS27183.