Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number J2K-4730-139M found under Relay Electromagnet by U S Dept Of Transportation Federal. The National Stock Number assigned to this part is 5945012945679, 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 J2K-4730-139M.