Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 55GB2105N-C4-E-63(1 found under Relay Electromagnet by Electronic Specialty Co. The National Stock Number assigned to this part is 5945013050796, 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 55GB2105N-C4-E-63(1.