Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HM212011 found under Ring Bearing Outer by Dexter Axle Co Inc Div Of Philip. The National Stock Number assigned to this part is 3110015401373, 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 HM212011.