Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N5 4038 3 4IN found under Valve Check by Tyco Valves And Controls Lp. The National Stock Number assigned to this part is 4820010871227, 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 N5 4038 3 4IN.