Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M5040-NN found under Valve Angle by Henry Technologies Inc. The National Stock Number assigned to this part is 4820013562631, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M5040-NN.