Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C589A found under Bushing Sleeve by Kieley And Mueller Inc. The National Stock Number assigned to this part is 3120005285112, 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 C589A.