Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 31B04-03010 found under Cover Plate Valve by Mitsubishi Heavy Industries. The National Stock Number assigned to this part is 4810015379625, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 31B04-03010.