Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BUS1740 found under Cam Follower Needle Bearing by Otis Elevator Co. The National Stock Number assigned to this part is 3110001570512, 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 BUS1740.