Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NMP-476 004-304-308 found under Stem Fluid Valve by Kunkle Industries Inc. The National Stock Number assigned to this part is 4820011890277, 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 NMP-476 004-304-308.