Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AC403A found under Bushing Sleeve by Consolidated Sewing Machine Corp. The National Stock Number assigned to this part is 3120012870286, 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 AC403A.