Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R400 found under Relay Electromagnet by Psg Controlsinc. The National Stock Number assigned to this part is 5945012827201, 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 R400.