Specified Torque For Standard Bolts

Class

Diameter

Pitch

Specified torque

(mm)

(mm)

Hexagon head bolt

Hexagon flange bolt

N*m

kgf*cm

ft.*lbf

N*m

kgf*cm

ft.*lbf

4T

6

1

5

55

48 in.*lbf

6

60

52 in.*lbf

8

1.25

12.5

130

9

14

145

10

10

1.25

26

260

19

29

290

21

12

1.25

47

480

35

53

540

39

14

1.5

74

760

55

84

850

61

16

1.5

115

1,150

83

-

-

-

5T

6

1

6.5

65

56 in.*lbf

7.5

75

65 in.*lbf

8

1.25

15.5

160

12

17.5

175

13

10

1.25

32

330

24

36

360

26

12

1.25

59

600

43

65

670

48

14

1.5

91

930

67

100

1,050

76

16

1.5

140

1,400

101

-

-

-

6T

6

1

8

80

69 in.*lbf

9

90

78 in.*lbf

8

1.25

19

195

14

21

210

15

10

1.25

39

400

29

44

440

32

12

1.25

71

730

53

80

810

59

14

1.5

110

1,100

80

125

1,250

90

16

1.5

170

1,750

127

-

-

-

7T

6

1

10.5

110

8

12

120

9

8

1.25

25

260

19

28

290

21

10

1.25

52

530

38

58

590

43

12

1.25

95

970

70

105

1,050

76

14

1.5

145

1,500

108

165

1,700

123

16

1.5

230

2,300

166

-

-

-

8T

8

1.25

29

300

22

33

330

24

10

1.25

61

620

45

68

690

50

12

1.25

110

1,100

80

120

1,250

90

9T

8

1.25

34

340

25

37

380

27

10

1.25

70

710

51

78

790

57

12

1.25

125

1,300

94

140

1,450

105

10T

8

1.25

38

390

28

42

430

31

10

1.25

78

800

58

88

890

64

12

1.25

140

1,450

105

155

1,600

116

11T

8

1.25

42

430

31

47

480

35

10

1.25

87

890

64

97

990

72

12

1.25

155

1,600

116

175

1,800

130

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