Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C8403 found under Relay Electromagnet by Whittaker Corp. The National Stock Number assigned to this part is 5945005832133, 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 C8403.