Nonstandard, nonmetallic flat washers come in 5,000 sizes. The difficultto- find washers come with no tooling charges. Available nonmetallic materials include ABS, acetal, PTFE, polyester, nylon, nylon MD, polycarbonate, fiber, polyethylene, and various phenolics. The washers come in 0.080 to 5.140-in. ODs and a wide variety of inside diameters and thicknesses.