Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R18XR1C found under Bearing Ball Annular by General Motors Corp. The National Stock Number assigned to this part is 3110010402056, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R18XR1C.