Image ISO-B Steel Mill 'Slide Gate' Female Threaded Plug Markets Steel Refining, Steel Melting, Steel Finishing Jump to Section Product Options Related Products Product Options Part Number Length Maximum OD Body Size Thread Thread Size Pipe Thread Seal Material H4F4-HV 1.94" (49.3 mm) 1.17" (29.7 mm) 1/2" Female NPTF 1/2"-14 NPT / NPTF Nitrile Rubber Steel F-H4F4-HV 1.94" (49.3 mm) 1.17" (29.7 mm) 1/2" Female NPTF 1/2"-14 FKM Steel Related Products Image H-Series ISO-B Dust Cap/Plug Image H-Series ISO-B High Volume Female Coupler Image H-Series ISO-B High Volume Female Plug Image H-Series ISO-B Female Threaded Couplers Image H-Series ISO-B Rigid Dust Plug Image H-Series ISO-B Steel Mill 'Slide Gate' Female Threaded Coupler Image Series-F Flow Control Valve