BR
INTRODUCTION
27
TORQUE
SPECIFICATIONS
SPECIFIED TORQUE FOR STANDARD BOLTS
Specified
torque
Class
Diameter
Pitch
Hexagon head bolt
Hexagon flange bob
m m
m m
N«m
kgf-cm
ft-lbf
N»m
kgf-cm
ft-lbf
6
1
5
5 5
48 in.-lbf
6
6 0
5 2 in.-lbf
8
1.25
12.5
130
9
1 4
145
1 0
4T
1 0
1.25
26
260
19
29
290
21
1 2
1.25
47
480
3 5
5 3
540
39
1 4
1.5
74
760
5 5
84
850
61
1 6
1.5
1 1 5
1,150
83
—
—
—
6
1
6.5
65
5 6 in.-lbf
7.5
75
65 in.-lbf
8
1.25
15.5
160
1 2
17.5
175
1 3
5T
1 0
1.25
3 2
330
2 4
36
360
26
12
1.25
5 9
600
4 3
6 5
670
48
1 4
1.5
91
930
67
100
1,050
76
1 6
1.5
140
1,400
101
—
—
—
6
1
8
80
69 in.-lbf
9
90
78 in.-lbf
8
1.25
1 9
195
1 4
21
2 1 0
1 5
6T
1 0
1.25
39
400
2 9
4 4
440
32
1 2
1.25
71
730
5 3
80
8 1 0
59
14
1.5
1 1 0
1,100
80
125
1,250
90
1 6
1.5
170
1,750
127
—
—
—
6
1
10.5
110
8
1 2
120
9
8
1.25
2 5
260
1 9
28
290
21
71
1 0
1.25
5 2
530
38
58
590
43
1 2
1.25
9 5
970
70
105
1,050
76
1 4
1.5
145
1,500
108
165
1,700
123
1 6
j
1.5
230
2,300
166
—
—
—
8
1.25
2 9
300
22
33
330
24
8T
1 0
1 2 5
61
620
4 5
68
690
50
1 2
1 2 5
1 1 0
1,100
80
120
1,250
90
8
1.25
3 4
340
2 5
3 7
380
2 7
9T
1 0
1.25
70
7 1 0
51
78
790
5 7
1 2
1.25
125
1,300
94
140
1,450
105
8
\.1
38
390
28
4 2
430
31
10T
1 0
1.25
!
78
800
5 8
88
890
64
1 2
1.25
140
1,450
105
155
1,600
116
8
1.25
4 2
430
31
47
480
35
1 I T
1 0
1.25
87
890
64
97
990
72
1 2
1.25
155
1,600
116
175
1,800
130