Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BJ40TH44M found under Bearing Sleeve by Rbc Aircraft Products Inc. The National Stock Number assigned to this part is 3120010384840, 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 BJ40TH44M.