Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B1-374-22 found under Shaft Pulley by Telsmith Inc. The National Stock Number assigned to this part is 3910008220940, and the Federal Supply Class is 3910 Conveyors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B1-374-22.