Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MH4019-2 found under Relay Electromagnet by Tyco Electronics Corporation. The National Stock Number assigned to this part is 5945002956418, 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 MH4019-2.