Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MCT-20P-05AA found under Valve Check by Thales Training And Simulation Ltd. The National Stock Number assigned to this part is 4820010752926, 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 MCT-20P-05AA.