Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U5700501 found under Coupler Directional by Etat Major De Larmee De Terre. The National Stock Number assigned to this part is 5985004927921, 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 U5700501.