Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A31C248-1 found under Filter Radio Frequency Interfere by Telex Computer Products Inc. The National Stock Number assigned to this part is 5915000693837, 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 A31C248-1.