Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DS1040 found under Switch Radio Freque by Arrowsmith Shelburne Inc. The National Stock Number assigned to this part is 5985007306151, 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 DS1040.