Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E 1 N 2 found under Synchro Transmitter by S P S Inc. The National Stock Number assigned to this part is 5990002580228, and the Federal Supply Class is 5990 Synchros And Resolvers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E 1 N 2.