Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 636-3609-020 found under Motor Torque by Raytheon E Systems Inc. The National Stock Number assigned to this part is 6105011443438, and the Federal Supply Class is 6105 Motors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 636-3609-020.