Flat Washers (Fender, Hardened, Plain, SAE, Unhardened, USS), Lock Washers (External Star, Internal Star, Split, Countersunk), Beveled Washers, Shoulder Washers, Spring Washers, Belleville Washers, Tab & Notch Washers, Shim Washers, Special WashersMaterials: Aluminum, Beryllium Copper, Brass, Copper, Phosphor Bronze, Steel, Stainless Steel, TitaniumNon Metallic Materials: Delrin, Fiberglass, Fibre, Kapton, Mica, Mylar, Neoprene, Nylatron, Nylon, Phenolic, Polyethylene (High Density), PVC (Polyvinyl Chloride), Santoprene, Teflon