Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XS311 found under Horn Waveguide by Rca Corp Government And Commercial. The National Stock Number assigned to this part is 5985002844222, 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 XS311.