Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 532 S1803B4 found under Synchro Transmitter by N A I Technologies Inc. The National Stock Number assigned to this part is 5990010311610, 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 532 S1803B4.