GENERAL / Tightening Screw-In Connection Depending on types of screw and sealing, different types of screw-in connection are used. IMPORTANT: Check that the thread pitch and thread type (tapered or straight) are the correct type before using any screw-in connection. (In general, the screw-in connection of male tapered thread is used except for measurement purpose.) Seal Tape Application Seal tape is used in order to seal clearances between male and female threads so that any leaks between threads may be prevented. Therefore, apply just enough seal tape to fill up thread clearances. Do not overwrap. Application Procedure Check that the thread surface is clean and, free of dirt or damage.
Apply the seal tape around threads in order to leave one to two pitch threads uncovered. Wrap the seal tape in the same direction as the threads. Low-Pressure-Hose Clamp Tightening Low-pressure-hose clamp tightening torque differs depending on the type of clamp. T-Bolt Type Band Clamp: 4.5 N m (0.45 kgf m, 3.3 lbf ft) Worm Gear Type Band Clamp:
6 to 7 N m (0.6 to 0.7 kgf m, 4.4 to 5.2 lbf ft) R G 30 ° a b a - Male Tapered Thresd b - Male Straight Thread W105-01-01-018 c c - Internal Thread e - Clearance d - External Thread d e W105-01-01-019 ｆ M114-07-041 ｆ - Leave one to two pitch threads uncovered ｇ h M114-07-043 g - T-bolt Type Band Clamp h - Worm Gear Type Band Clamp M114-07-042 W1-2-7 Wrench Size mm Tightening Torque N⋅m (kgf⋅m, lbf⋅ft) Hose Fittings FC material SS material 19 22 27 36 41 50 60 15 (1.5, 11) 30 (3.0, 22) 50 (5.0, 37) 70 (7.0, 51) 110 (11, 80) 160 (16, 116) 200 (20, 145) 35 (3.5, 26) 50 (5.0, 37) 95 (9.5, 69) 160 (16, 115) 210 (21, 155) 330 (33, 240)