Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L670678-1 found under Network Impedance M by Raytheon Company. The National Stock Number assigned to this part is 5915005394849, 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 L670678-1.