Standard Eyebolt Tightening Torque; Standard Union Nut Tightening Torque - Mitsubishi Heavy Industries SL Series Service Manual

SERVICE DATA

2.3 Standard eyebolt tightening torque

Dia × Pitch
M8 × 1.25
M10 × 1.25
M12 × 1.25
M14 × 1.5
M16 × 1.5
M18 × 1.5
M20 × 1.5
M24 × 1.5
M27 × 1.5
(Dry)

2.4 Standard union nut tightening torque

Nominal
diameter
63
80
100
120
150
180
200
220
254
(Maximum tolerance value: ±10%, dry condition)
2-10
Table 2-15 Standard eyebolt tightening torque
Threads Width
across flats
(mm) (mm) [in.]
12 [0.47]
14 [0.55]
17 [0.67]
19 [0.75]
22 [0.87]
24 [0.94]
27 [1.06]
32 [1.26]
41 [1.61]
Table 2-16 Standard union nut tightening torque
Cap nut size
M (mm)
M14 × 1.5
M16 × 1.5
M20 × 1.5
M22 × 1.5
M27 × 1.5
M30 × 1.5
M30 × 1.5
M33 × 1.5
M36 × 1.5
Strength classification
4T
N·m kgf·m
8 ± 1 0.8 ± 0.1
15 ± 2 1.5 ± 0.2
25 ± 3 2.5 ± 0.3
34 ± 4 3.5 ± 0.4
44 ± 5 4.5 ± 0.5
74 ± 5 7.5 ± 0.5
98 ± 10 10.0 ± 1.0
147 ± 15 15.0 ± 1.5
226 ± 20 23.0 ± 2.0
Width
across flats N·m kgf·m
(mm) [in.]
19 [0.75] 39
22 [0.87] 49
27 [1.06] 78
30 [1.18] 98
32 [1.26] 157
36 [1.42] 196
36 [1.42] 196
41 [1.61] 245
41 [1.61] 294
lbf·ft
6 ± 0.7
11 ± 1.5
18 ± 2.2
25 ± 3.0
32 ± 3.7
55 ± 3.7
72 ± 7.4
108 ± 11.1
167 ± 14.8
lbf·ft
4 29
5 36
8 58
10 72
16 116
20 145
20 145
25 181
30 217