Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4CR-6-653 found under Relay by Sensata Technologies Inc. The National Stock Number assigned to this part is 5945011692607, 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 4CR-6-653.