Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 70406-4 found under Coil Radio Frequency by Efratom Time And Frequency Products. The National Stock Number assigned to this part is 5950012422805, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 70406-4.