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Nissan Sentra B18 (2020-2025) Service Manual: Tightening Torque of Standard Bolts

Description

Description

This vehicle has both new standard based on ISO* and previous standard bolts/nuts. There are some differences between these two types of bolts/ nuts; shape of the head, grade of strength, hexagonal width across flats and the standard tightening torque.

  • For guidance in discriminating, refer to Tightening Torque Table (New Standard Included).

  • If the tightening torque is not described in the description or figure, refer to Tightening Torque Table (New Standard Included).

*ISO: International Organization for Standardization

Tightening Torque Table (new Standard Included)

Tightening Torque Table (New Standard Included)

CAUTION:

  • The special parts are excluded.

  • The bolts/nuts in these tables have a strength (discrimination) number/symbol assigned to the head or the like. As to the relation between the strength grade in these tables and the strength (discrimination) number/symbol, refer to “DISCRIMINATION OF BOLTS AND NUTS”.

PREVIOUS STANDARD

Grade (Strength grade)

Bolt size

Bolt diameter

mm

Hexagonal width across flats

mm

Pitch

mm

Tightening torque (Without lubricant)

Hexagon head bolt

Hexagon flange bolt

N·m

kg-m

ft-lb

in-lb

N·m

kg-m

ft-lb

in-lb

4T

M6

6.0

10

1.0

5.5

0.56

4

49

7

0.71

5

62

M8

8.0

12

1.25

13.5

1.4

10

—

17

1.7

13

—

1.0

13.5

1.4

10

—

17

1.7

13

—

M10

10.0

14

1.5

28

2.9

21

—

35

3.6

26

—

1.25

28

2.9

21

—

35

3.6

26

—

M12

12.0

17

1.75

45

4.6

33

—

55

5.6

41

—

1.25

45

4.6

33

—

65

6.6

48

—

M14

14.0

19

1.5

80

8.2

59

—

100

10

74

—

7T

M6

6.0

10

1.0

9

0.92

7

80

11

1.1

8

97

M8

8.0

12

1.25

22

2.2

16

—

28

2.9

21

—

1.0

22

2.2

16

—

28

2.9

21

—

M10

10.0

14

1.5

45

4.6

33

—

55

5.6

41

—

1.25

45

4.6

33

—

55

5.6

41

—

M12

12.0

17

1.75

80

8.2

59

—

100

10

74

—

1.25

80

8.2

59

—

100

10

74

—

M14

14.0

19

1.5

130

13

96

—

170

17

125

—

9T

M6

6.0

10

1.0

11

1.1

8

—

13.5

1.4

10

—

M8

8.0

12

1.25

28

2.9

21

—

35

3.6

26

—

1.0

28

2.9

21

—

35

3.6

26

—

M10

10.0

14

1.5

55

5.6

41

—

80

8.2

59

—

1.25

55

5.6

41

—

80

8.2

59

—

M12

12.0

17

1.75

100

10

74

—

130

13

96

—

1.25

100

10

74

—

130

13

96

—

M14

14.0

19

1.5

170

17

125

—

210

21

155

—

CAUTION:

The parts with aluminum or the cast iron washer surface/thread surface are excluded.

NEW STANDARD BASED ON ISO

Grade (Strength grade)

Bolt size

Bolt diameter

mm

Hexagonal width across flats

mm

Pitch

mm

Tightening torque

Hexagon head bolt

Hexagon flange bolt

N·m

kg-m

ft-lb

in-lb

N·m

kg-m

ft-lb

in-lb

4.8

(Without lubricant)

M6

6.0

10

1.0

5.5

0.56

4

49

7

0.71

5

62

M8

8.0

13

1.25

13.5

1.4

10

—

17

1.7

13

—

1.0

13.5

1.4

10

—

17

1.7

13

—

M10

10.0

16

1.5

28

2.9

21

—

35

3.6

26

—

1.25

28

2.9

21

—

35

3.6

26

—

M12

12.0

18

1.75

45

4.6

33

—

55

5.6

41

—

1.25

45

4.6

33

—

65

6.6

48

—

M14

14.0

21

1.5

80

8.2

59

—

100

10

74

—

4.8

(With lubricant)

M6

6.0

10

1.0

4

0.41

3

35

5.5

0.56

4

49

M8

8.0

13

1.25

11

1.1

8

—

13.5

1.4

10

—

1.0

11

1.1

8

—

13.5

1.4

10

—

M10

10.0

16

1.5

22

2.2

16

—

28

2.9

21

—

1.25

22

2.2

16

—

28

2.9

21

—

M12

12.0

18

1.75

35

3.6

26

—

45

4.6

33

—

1.25

35

3.6

26

—

45

4.6

33

—

M14

14.0

21

1.5

65

6.6

48

—

80

8.2

59

—

8.8

(With lubricant)

M6

6.0

10

1.0

8

0.82

6

71

10

1.0

7

89

M8

8.0

13

1.25

21

2.1

15

—

25

2.6

18

—

1.0

21

2.1

15

—

25

2.6

18

—

M10

10.0

16

1.5

40

4.1

30

—

50

5.1

37

—

1.25

40

4.1

30

—

50

5.1

37

—

M12

12.0

18

1.75

70

7.1

52

—

85

8.7

63

—

1.25

70

7.1

52

—

85

8.7

63

—

M14

14.0

21

1.5

120

12

89

—

140

14

103

—

10.9

(With lubricant)

M6

6.0

10

1.0

10

1.0

7

89

12

1.2

9

106

M8

8.0

13

1.25

27

2.8

20

—

32

3.3

24

—

1.0

27

2.8

20

—

32

3.3

24

—

M10

10.0

16

1.5

55

5.6

41

—

65

6.6

48

—

1.25

55

5.6

41

—

65

6.6

48

—

M12

12.0

18

1.75

95

9.7

70

—

110

11

81

—

1.25

95

9.7

70

—

110

11

81

—

M14

14.0

21

1.5

160

16

118

—

180

18

133

—

CAUTION:

  1. Use tightening torque with lubricant for the new standard bolts/nuts in principle. Friction coefficient stabilizer is applied to the new standard bolts/nuts.

  2. However, use tightening torque without lubricant for the following cases. Friction coefficient stabilizer is not applied to the following bolts/nuts.

    • Grade 4.8, M6 size bolt, Conical spring washer installed

    • Paint removing nut (Size M6 and M8) for fixing with weld bolt

DISCRIMINATION OF BOLTS AND NUTS

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