Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M81934-2-12C040 found under Bearing Sleeve by Minebea Mitsumi Inc. The National Stock Number assigned to this part is 3120016280380, 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 M81934-2-12C040.