Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PDM 40 10 56077 found under Divider Power Radio by Merrimac Industries Inc. The National Stock Number assigned to this part is 5985013294408, 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 PDM 40 10 56077.