‹› Image Image NK-Series Japanese Pneumatic Female Threaded Coupler Markets Maintenance Repair Operations (MRO) Product Options Hide lower priority columns Part Number All 2NKBF22NKF2Length All 1.97"Maximum OD All 1.02"Body Size All 1/4"Thread All BSPPNPTThread Size All 1/4"Pipe Thread All BSPP / BSPTNPT / NPTFMaterial All Steel 2NKBF2 1.97" 1.02" 1/4" BSPP 1/4" BSPP / BSPT Steel 2NKF2 1.97" 1.02" 1/4" NPT 1/4" NPT / NPTF Steel