Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 50023910 found under Stem Hose by Atlas Copco. The National Stock Number assigned to this part is 4820015329331, 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 50023910.