This listing is for 6 piece/s.Thrust washers can be found in almost every appliance, machine, transportation conveyance, power tool, and recreational device that has moving parts, axles, bolts, pins, bearings, and rotating components. In their simplest form, thrust washers are long-wearing flat bearings in the shape of a washer that transmit and resolve axial forces in rotating mechanisms to keep components aligned along a shaft. Thrust washers are an economical alternative to rolling thrust bearings whenever forces velocities are moderate. Materials Thrust washers can be made from case-hardened steel, through-hardened steel, stainless steel, bronze, phosphorous bronze, and brass. Graphite is used in high-temperature applications. Plastics are used for low speeds and light loads. Rubber and lignum vitae are used in water-lubricated bearings. Thrust washers can be made in standard thicknesses, with various inside and outside diameters as needed. Important considerations include flatness and parallelism requirements, surface finish, heat treatment, through-hardness, passivating, and plating. Specifications Inner Diameter: 32mm Outer Diameter: 54mm Width: 38.1mm