Image HT-Series ISO 16028 Flushface Male Threaded Plug Markets Construction, Energy / Oil & Gas Jump to Section Product Options Related Products Product Options Part Number Length Maximum OD Body Size Thread Thread Size Material HT3OM4 2.73" (69.3 mm) 1.17" (29.7 mm) 3/8" Male ORB 3/4"-16 Steel HT3M3 2.87" (72.9 mm) 1.24" (31.5 mm) 3/8" Male NPTF 3/8"-18 Steel HT3M4 2.96" (75.2 mm) 1.24" (31.5 mm) 3/8" Male NPTF 1/2"-14 Steel Related Products Image HT-Series Flushface Coupler Dust Plug Image HT-Series Flushface Female Threaded Coupler Image HT-Series Flushface Female Threaded Plug Image HT-Series ISO16028 Flushface Male Threaded Coupler Image HT-Series Flushface Plug Dust Cap