Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 512291 found under Synchro Receiver Transmitter by Smiths Detection Inc. The National Stock Number assigned to this part is 5990009264324, 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 512291.