Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 021-70254-001 found under Amplifier Radio Frequency by Farinon Miltech. The National Stock Number assigned to this part is 5996004793046, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 021-70254-001.