Image NT-Series Japanese Hydraulic Female Threaded Coupler Markets Agriculture & Forestry Product Options Part Number Female Thread Size Length Maximum OD Coupler Size Body Size Thread Thread Size Female Thread Material 2NTBTF2 1/4" 1.99" 1.12" 1/4" 1/4" BSPT 1/4"-19 BSPT Steel 3NTBTF3 3/8" 2.37" 1.32" 3/8" 3/8" BSPT 3/8"-19 BSPT Steel