Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ARDA4RPM found under Gearcase Motor by Hurst Industries Inc. The National Stock Number assigned to this part is 3010010682102, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ARDA4RPM.