Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X71-127 found under Transformer Pulse by El Rad Mfg Co. The National Stock Number assigned to this part is 5950001621814, 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 X71-127.