‹› Image Image NK-Series Japanese Pneumatic Male Threaded Coupler Markets Maintenance Repair Operations (MRO) Product Options Hide lower priority columns Part Number All 2NKBM22NKM2Length All 2.12"Maximum OD All 1.02"Body Size All 1/4"Thread All BSPTNPTThread Size All 1/4"Pipe Thread All BSPP / BSPTNPTMaterial All Steel 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