The standard flat washers come in short, medium, and long runs, with outside diameters ranging from 0.081 to 5.000 in. The washers have a variety of inside-diameter, thickness, heat-treatment, finishing, and plating options. Washers can be wrought, USS flat washers, SAE flat washers, fender washers, machine-screw washers, ANSI metric plain and B18.22.1 American standard type A and B washers. The standard washers come in low-carbon sheet steel, spring steels, stainless steel, aluminum, brass, copper, nickel silver, ABS, acetal, polyester, nylon, polycarbonate, polyethylene, NEMA-grade laminates and other materials.
Boker's Inc., 3104 Snelling Ave., Minneapolis, MN 55406-1937, (800) 927-4377,