Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 803-5001048 PIECE 137 found under Ring Retaining by Speco Corp. The National Stock Number assigned to this part is 5325013406876, 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 803-5001048 PIECE 137.