1/2" M-NPT x 1/4" F-NPT 150 lb 304 Stainless Steel Threaded Cast Hex Bushing / END ITEM IDENTIFICATION: 4320016177587 EXTERNAL THREAD SIZE: P0.500 INTERNAL THREAD SIZE: P0.250 EXTERNAL SCREW THREAD SERIES DESIGNATOR: NPT INTERNAL SCREW THREAD SERIES DESIGNATOR: NPT PART NAME ASSIGNED BY CONTROLLING AGENCY: BUSHING PIPE 0.50 INCH X 0.25 INCH MATERIAL: STEEL CORROSION RESISTING STYLE DESIGNATOR: N16 DOUBLE TAPPED