Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MU1217X found under Ring Bearing Inner by Rexnord Industries Inc Div Link. The National Stock Number assigned to this part is 3110008411504, 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 MU1217X.