Tube size
Outer diameter x thickness (mm)
Wrench
(mm)
Tightening torque
N
･
m {lbf
･
ft}
10x1.5
19
39.1 to 48.9 {29 to 37}
15x2.0
27
127 to 167 {96 to 124}
18x2.5
32
157 to 197 {116 to 144}
22x3.0
36
196 to 236 {146 to 174}
28x4.0
41
246 to 304 {178 to 222}
35x5.0
55
397 to 485 {297 to 363}
Screw diameter
(PF)
Wrench
(mm)
Tightening torque
N
･
m {lbf
･
ft}
1/8
14
15 to 19 {11 to 13}
1/4
19
34 to 38 {26 to 28}
3/8
22
69 to 79 {50 to 58}
1/2
27
98.2 to 117.8 {73 to 87}
3/4
36
152.2 to 171.8 {112 to 126}
1
41
245.2 to 264.8 {181 to 195}
Screw diameter
(PF)
Wrench
(mm)
Tightening torque
N
･
m {lbf
･
ft}
1/8
14
13 to 17 {10 to 12}
1/4
19
24.1 to 33.9 {18 to 26}
3/8
22
44.1 to 53.9 {32 to 40}
1/2
27
73.1 to 82.9 {54 to 62}
3/4
36
108.2 to 127.8 {80 to 94}
1
41
122 to 152 {90 to 112}
4.7
TORQUE SPECIFICATIONS FOR JOINTS & HYDRAULIC HOSES
These tightening torques are available in the case of tightening without lubricant.
Nuts & Sleeve
Joints for piping
Hydraulic hoses
［
4. INSPECTION AND MAINTENANCE
］
4-14
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