Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17P2A1328-509 found under Bearingsleeve by Boeing Company The. The National Stock Number assigned to this part is 3120016959009, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 17P2A1328-509.