Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MBMD3200301 found under Bearing Sleeve by Whitaker Brothers Business Machines. The National Stock Number assigned to this part is 3120015100308, 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 MBMD3200301.