Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B4531979400210L found under Bearing Ball Annular by Emerson Electric Co. The National Stock Number assigned to this part is 3110012792169, 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 B4531979400210L.