Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MK60 1 2IN SER194813A found under Valve Regulating Fluid Pressure by Richards Industries Valve Group. The National Stock Number assigned to this part is 4820014403297, 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 MK60 1 2IN SER194813A.