Image Image NK-Series Japanese Pneumatic Male Threaded Coupler Markets Maintenance Repair Operations (MRO) Product Options Part Number Length Maximum OD Body Size Thread Thread Size Pipe Thread Material 2NKBM2 2.12" 1.02" 1/4" BSPT 1/4" BSPP / BSPT Steel 2NKM2 2.12" 1.02" 1/4" NPT 1/4" NPT Steel