Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MD13X6D found under Switch Radio Freque by Herley Industries Inc. The National Stock Number assigned to this part is 5985012383326, 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 MD13X6D.