Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 400064 found under Seal Waveguide by Radio Frequency Systems. The National Stock Number assigned to this part is 5985013088606, 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 400064.