Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FC4-155 found under Relay Electromagnet by Struthers Dunn Llc. The National Stock Number assigned to this part is 5945006151477, 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 FC4-155.