Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12003 found under Relay Electromagnet by Eaton Corporation. The National Stock Number assigned to this part is 5945007525217, 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 12003.