Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CT57-4 found under Felt Mechanical Pre by Bendix Corporation. The National Stock Number assigned to this part is 5330002912943, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CT57-4.