Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12717 found under Synchro Assembly by L3 Communications Corp. The National Stock Number assigned to this part is 5990009498450, 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 12717.