Bild 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 Bild H-Series ISO-B Dust Cap/Plug Bild H-Series ISO-B High Volume Female Coupler Bild H-Series ISO-B High Volume Female Plug Bild H-Series ISO-B Female Threaded Couplers Bild H-Series ISO-B Rigid Dust Plug Bild H-Series ISO-B Steel Mill 'Slide Gate' Female Threaded Coupler Bild Series-F Flow Control Valve