Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C5013 PIECE 16 found under Bushing Sleeve by Singer Valve Inc. The National Stock Number assigned to this part is 3120012014645, 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 C5013 PIECE 16.