Boker's Custom C-washers come in the shape of a “C” as they have a slot cut from the center to the perimeter allowing the washer to be removed, replaced, or inserted without completely removing the fasteners. C-washers are designed to slide in and out of position on a bolt or shaft in a partially completed assembly and can be used as a retention device on a grooved shaft to keep components in place. Custom produced in short, medium, and long runs, they are available in over 2,000 commonly specified and difficult to find materials including low-carbon steel sheet, various spring steels, stainless steel, aluminum, brass, copper, and nickel silver. Non-metallic materials include ABS, acetal, polyester, nylon, MD nylon, polycarbonate, fiber, polyethylene, and various NEMA grade phenolics.