Metric Bolt Marking and Torque Values

Updated 1 month ago by Juan Velez

Standard Metric Bolt Dimensions and Grades

Torque Values

Applications (Engine)

Name

Size (163-224cc)

Nm

Ft-lb.

Size (270-459cc)

Nm

Ft-lb.

Connecting Rod Bolt

M7

12

9

M8

18

13

Cylinder Head Bolt

M8

24

18

M10

39

29

Flywheel Nut

M14

75

55

M16

115

85

Crankcase Cover Bolt

M8

24

18

M8

25

18

Oil Alert Connector Nut

M10

10

7

M10

10

7

Muffler Installation Nut

M8

24

18

M8

24

18

Oil Drain Bolt

M10

18

13

M12

22

16

Air Cleaner Assembly Nut

M6

9

7

M6

9

7

Exhaust Pipe

M10

18

13

M10

18

13

Applications (Generator)

Name

Size (163-224cc)

Nm

Ft-lb.

Size (270-459cc)

Nm

Ft-lb.

Rotor Mounting Bolt (Long Bolt)

M8

24

18

M10

37.5

28

Stator Mounting Bolt (Long Bolt)

M6

12

9

M6

12

9

Crankcase Cover

M8

24

18

M8

24

18

Fuel Valve Nut

M10

20

15

M10

20

15

Fuel Tank Nut and Bolt

M6

10

7

M8

16

12

View and download the chart here.


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