Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 42H100 found under Valve Regulating Fluid Pressure by Siemens Energy And Automation Inc. The National Stock Number assigned to this part is 4820013138737, 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 42H100.