Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BX21211-7 found under Dummy Load Electric by Navair And Navsea Managed. The National Stock Number assigned to this part is 5985001949746, 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 BX21211-7.