Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S6053 found under Retainer Clutch Plate Transmissi by Simmonds Precision Products Inc. The National Stock Number assigned to this part is 2520014917729, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S6053.