Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5615 ASSY BB PA found under Ring Retaining by National Oilwell Varco Inc. The National Stock Number assigned to this part is 5325007151152, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5615 ASSY BB PA.