Image NT-Series Japanese Hydraulic Female Threaded Plug Markets Agriculture & Forestry Product Options Part Number Female Thread Size Length Maximum OD Body Size Thread Thread Size Female Thread Material NT2BTF2 1/4" 1.41" 0.82" 1/4" BSPT 1/4"-19 BSPT Steel NT3BTF3 3/8" 1.66" 0.98" 3/8" BSPT 3/8"-19 BSPT Steel