Maintenance:

10.0Tightening torques for bolts with standard metric thread

Bolt size

Tightening torques Nm

 

8.8

10.9

12.9

M 4

3

5

5

M 5

6

9

10

M 6

10

15

18

M 8

25

35

45

M10

50

75

83

M12

88

123

147

M14

137

196

235

M16

211

300

358

M18

290

412

490

M20

412

578

696

M22

560

785

942

M24

711

1000

1200

M27

1050

1480

1774

M30

1420

2010

2400

 

 

Bolt size

Tightening torques ft-lb

 

8.8

10.9

12.9

M 4

2

3

4

M 5

4

7

7

M 6

7

11

13

M 8

18

26

33

M10

37

55

61

M12

65

91

108

M14

101

145

173

M16

156

221

264

M18

213

303

361

M20

304

426

513

M22

413

559

695

M24

524

798

885

M27

774

1092

1308

M30

1047

1482

1770

Strength classes for bolts with untreated, unlubricated surface. The bolt quality designation is indicated on the bolt heads.

8.8 = 8G; 10.9 = 10K; 12.9 = 12K

The values represent 90% utilisation of the bolt yield strength with a coeffi cient of friction of μ ges. = 0.14. Adherence to the tightening torque levels is checked using a torque wrench.

The specifi ed tightening torques do not apply if MoSo2 lubricant is used.

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Image 37
Multiquip P33/24 HHMR Tightening torques for bolts with standard metric thread, Bolt size Tightening torques Nm