Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K663140070 found under Transformer Radio F by F E L Corp. The National Stock Number assigned to this part is 5950009188334, 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 K663140070.