Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 481561-1 found under Waveguide Assembly by Raytheon Technical Services Company. The National Stock Number assigned to this part is 5985004882404, 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 481561-1.