Hydraulic Knowledge

BOLT, NUT TORQUE RECOMMENDED VALUE

Date:2015/5/14 14:25:28 Hits:622

BOLT, NUT TORQUE RECOMMENDED VALUE(FOR REFERENCE ONLY

STRENGTH GRADE

4.8

6.8

8.8

10.9

12.9

MINIMUM BREAKING STRENGTH

392Mpa

588Mpa

784Mpa

941Mpa

1176Mpa

MATERIAL

GENERAL

 STRUCTURAL

 STEEL

MECHANICAL

STRUCTURAL

STEEL

CHROMIUM

MOLYBDENUM

ALLOY  STEEL

NICKEL
CHROMIUM
MOLYBDENUM
ALLOY  STEEL

NICKEL 
CHROMIUM
MOLYBDENUM
ALLOY STEEL

BOLTM

NUTS

TORQUE VALUE

TORQUE VALUE

TORQUE VALUE

TORQUE VALUE

TORQUE VALUE

mm

mm

KGM

Nm

KGM

Nm

KGM

Nm

KGM

Nm

KGM

Nm

14

22

7

69

10

98

14

137

17

165

23

225

16

24

10

98

14

137

21

206

25

274

36

353

18

27

14

137

21

206

29

284

35

341

49

480

20

30

18

176

28

296

41

402

58

569

69

676

22

32

23

225

34

333

55

539

78

765

93

911

24

36

32

314

48

470

70

686

100

981

120

1176

27

41

45

441

65

637

105

1029

150

1472

180

1764

30

46

60

588

90

882

125

1225

200

1962

240

2352

33

50

75

735

115

1127

150

1470

210

2060

250

2450

36

55

100

980

150

1470

180

1764

250

2453

360

2940

39

60

120

1176

180

1764

220

2156

300

2943

370

3626

42

65

155

1519

240

2352

280

2744

390

3826

470

4606

45

70

180

1764

280

2744

320

3136

450

4415

550

5390

48

75

230

2254

350

3430

400

3920

570

5592

680

6664

52

80

280

2744

420

4116

480

4704

670

6573

850

8330

56

85

360

3528

530

5149

610

5978

860

8437

1050

10290

60

90

410

4018

610

5978

790

7742

1100

10791

1350

13230

64

95

510

4998

760

7448

900

8820

--

--

--

--

68

100

580

5684

870

8526

1100

10780

--

--

--

--

72

105

660

6468

1000

9800

1290

12642

--

--

--

--

76

110

750

7350

1100

10780

1500

14700

--

--

--

--

80

115

830

8134

1250

12250

1850

18130

--

--

--

--

85

120

900

8820

1400

13720

2250

22050

--

--

--

--

90

130

1080

10584

1650

16170

2500

24500

--

--

--

--

100

145

1400

13720

2050

20090

--

--

--

--

--

--

110

155

1670

16366

2550

24990

--

--

--

--

--

--

120

175

2030

19894

3050

29890

--

--

--

--

--

--

METRIC SIZE

INCH SIZE 

HEXAGONSIZE S

THREAD SIZES D

HEXAGONSIZE J

HEXAGONSIZE S

THREAD SIZES D

HEXAGONSIZE J

(mm)

(mm)

(mm)

(inch)

(inch)

(inch)

17

M10

8

11/16

5/8

1/2

19

M12

10

11/4

3/4

5/8

22

M14

12

17/16

7/8

3/4

24

M16

14

15/8

1

3/4

27

M18

14

113/16

11/8

7/8

30

M20

17

2

11/4

7/8

32

M22

17

23/16

13/8

1

36

M24

19

23/8

13/2

1

41

M27

19

29/16

15/8

--

46

M30

22

23/4

13/4

11/4

50

M33

24

215/16

17/8

13/8

55

M36

27

3

2

11/2

60

M39

2730

31/8

2

15/8

65

M42

32

33/8

21/4

15/4

70

M45

--

31/2

21/4

13/4

75

M48

36

33/4

21/2

13/4

80

M52

36

37/8

21/2

17/8

85

M56

41

41/8

23/4

2

90

M60

46

41/4

23/5

2

95

M64

46

45/8

3

21/4

100

M68

50

5

31/4

21/4

105

M72

55

1. This page is the German industrial standards, torque

     values in the table for bolt reaches 70% of the yield

     limit determination.

2. Recommend locking torque value is: the data in the

    table x 80%.

    For example:8.8 magnitude bolt, for example: M48,

    locking torque as: 400 * 80% = 320 KGM.

3. Break loose torque value for locking torque

   1.5 ~ 2 times.

    For example: the cases of locking torque is 320 KGM,

    they break loose torque is about

   320 x (1.5 ~ 2) = 480 ~ 640 KGM. 

110

M76

60

115

M80

65

120

M85

70

130

M90

7075

135

M95

--

145

M100

85

150

M105

--

155

M110

--

165

M115

--

170

M120

--

180

M125

--

185

M130

--

200

M140

--

210

M150

--

Copyright:Shanghai Cen Nuo Machinery Co. Ltd.