FOREWORD STANDARD TIGHTENING TORQUE
00-34 WA320-6
★ This table corresponds to the bolts in Figure B.
★ Figure B
For Split Flange Bolts 00
★ Tighten split flange bolts to the torque in this table, unless there are special instructions.
For O-Ring Boss Piping Joints 00
★ Tighten the O-ring boss piping joints to the torque in this table, unless there are special instructions.
[
Thread Diameter
of Bolt
Width across Flats Tightening Torque
mm mm N•m kgm lbf in
6 10 5.9 – 9.8 0.6 – 1.0 52.22 – 86.74
mm mm N•m kgm lbf ft
8 13 13.7 – 23.5 1.4 – 2.4 10.10 – 17.33
10 14 34.3 – 46.1 3.5 – 4.7 25.29 – 34.00
12 27 74.5 – 90.2 7.6 – 9.2 54.93 – 66.30
Thread Diameter Width across Flats Tightening Torque
mm mm N•m kgm lbf ft
10 14 59 – 74 59 – 74 43.51 – 54.57
12 17 98 – 123 98 – 123 72.28 – 90.72
16 22 235 – 285 235 – 285 173.32 – 210.20
Norminal No.
Thread Diameter Width across Flats Tightening Torque (N•m [kgm] {lbf ft})
mm mm Range Target
02 14
Varies depending on
type of connector
35 – 63 [3.5 – 6.5] {25.81 – 46.47} 44 [4.5] {32.45}
03, 04 20 84 – 132 [8.5 – 13.5] {61.96 – 97.36} 103 [10.5] {75.97}
05, 06 24 128 – 186 [13.0 – 19.0] {94.41 – 137.19} 157 [16.0] {115.80}
10, 12 33 363 – 480 [37.0 – 49.0] {267.73 – 354.03} 422 [43.0] {311.25}
14 42 746 – 1010 [76.0 – 103.0] {550.22 – 744.94} 883 [90.0] {651.27}
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