Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 850450 found under Bearing Tractor Bar by International Business Machines Corp. The National Stock Number assigned to this part is 3110011776150, 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 850450.