Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CY 00056 001 found under Relay Hybrid by Raytheon E Systems Inc. The National Stock Number assigned to this part is 5945013866176, 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 CY 00056 001.