Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 502-1243 found under Relay Electromagnet by Ddc Pertec Peripherals Corp. The National Stock Number assigned to this part is 5945011080601, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 502-1243.