Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M39016 13 057M found under Relay Electromagnet by Communications Instruments Inc. The National Stock Number assigned to this part is 5945011203851, 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 M39016 13 057M.