Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 51616647 found under Bushing Sleeve by Atlas Copco. The National Stock Number assigned to this part is 3120015329317, 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 51616647.