Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 121CR51A1A found under Relay Electromagnet by General Electric Co. The National Stock Number assigned to this part is 5945001974296, 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 121CR51A1A.