Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1021B2 found under Clutch Assembly Friction by Diamond Reo Truck Co. The National Stock Number assigned to this part is 2520004590337, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1021B2.