Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 122-35-139 found under Filter Radio Frequency Interfere by Metraplex Corp. The National Stock Number assigned to this part is 5915014142387, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 122-35-139.