Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NS 4038 FIND 6 1 2IN found under Cap Valve by Tyco Valves And Controls Lp. The National Stock Number assigned to this part is 4820010872224, 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 NS 4038 FIND 6 1 2IN.