Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T501 found under Clutch Magnetic Non by Designatronics Incorporated. The National Stock Number assigned to this part is 3010010175426, 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 T501.