Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9R8-0391 01 found under Coupler Rotary Radio Frequency by Selex Es Ltd. The National Stock Number assigned to this part is 5985016618093, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 9R8-0391 01.