Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SS3NTRS4-95DA found under Valve Regulating Fluid Pressure by Whitey Co. The National Stock Number assigned to this part is 4820012988628, 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 SS3NTRS4-95DA.