Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K37X42X17 found under Cage Valve by Gleason Hurth Maschinen Undwerkzeuge. The National Stock Number assigned to this part is 4820013031198, 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 K37X42X17.