Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AR20-N01GHZ found under Valve Regulating Fluid Pressure by Msc Industrial Supply Co. The National Stock Number assigned to this part is 4820015905410, 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 AR20-N01GHZ.