六角头螺栓

螺纹规格 d

M5

M6

(M7)

M8

M10

M12

(M14)

M16

(M18)

M20

(M22)

M24

P

螺距

0.8

1

1

1.25

1.5

1.75

2

2

2.5

2.5

2.5

3

b

L≤125

16

18

20

22

26

30

34

38

42

46

50

54

125＜L≤200

/

/

/

/

/

/

40

44

48

52

56

60

L＞200

/

/

/

/

/

/

/

/

/

/

69

73

c

最大值

0.5

0.5

0.6

0.6

0.6

0.6

0.6

0.8

0.8

0.8

0.8

0.8

da

最大值

6

7.2

8.2

10.2

12.2

14.7

16.7

18.7

21.2

24.4

26.4

28.4

ds

最大值

5.48

6.48

7.58

8.58

10.58

12.7

14.7

16.7

18.7

20.84

22.84

24.84

最小值

4.52

5.52

6.42

7.42

9.42

11.3

13.3

15.3

17.3

19.16

21.16

23.16

dw

最小值

7.06

8.74

9.47

11.47

14.47

16.47

19.15

22

24.85

27.7

31.35

33.25

e

最小值

8.63

10.89

11.94

14.2

17.59

19.85

22.78

26.17

29.56

32.95

37.29

39.55

k

公称

3.5

4

4.8

5.3

6.4

7.5

8.8

10

11.5

12.5

14

15

最大值

3.875

4.375

5.175

5.675

6.85

7.95

9.25

10.75

12.4

13.4

14.9

15.9

最小值

3.125

3.625

4.425

4.925

5.95

7.05

8.35

9.25

10.6

11.6

13.1

14.1

kw

最小值

2.19

2.54

3.1

3.45

4.17

4.94

5.85

6.48

7.42

8.12

9.17

9.87

L1

最大值

1.2

1.4

1.4

2

2

3

3

3

3

4

4

4

r

最小值

0.2

0.25

0.25

0.4

0.4

0.6

0.6

0.6

0.6

0.8

0.8

0.8

s

最大值=公称

8

10

11

13

16

18

21

24

27

30

34

36

最小值

7.64

9.64

10.57

12.57

15.57

17.57

20.16

23.16

26.16

29.16

33

35

螺纹规格 d

(M27)

M30

(M33)

M36

(M39)

M42

(M45)

M48

(M52)

M56

(M60)

M64

P

螺距

3

3.5

3.5

4

4

4.5

4.5

5

5

5.5

5.5

6

b

L≤125

60

66

72

/

/

/

/

/

/

/

/

/

125＜L≤200

66

72

78

84

90

96

102

108

116

/

/

/

L＞200

79

85

91

97

103

109

115

121

129

137

145

153

c

最大值

0.8

0.8

0.8

0.8

1

1

1

1

1

1

1

1

da

最大值

32.4

35.4

38.4

42.4

45.4

48.6

52.6

56.6

62.6

67

71

75

ds

最大值

27.84

30.84

34

37

40

43

46

49

53.2

57.2

61.2

65.2

最小值

26.16

29.16

32

35

38

41

44

47

50.8

54.8

58.8

62.8

dw

最小值

38

42.75

46.55

51.11

55.86

59.95

64.7

69.45

74.2

78.66

83.41

88.16

e

最小值

45.2

50.85

55.37

60.79

66.44

71.3

76.95

82.6

88.25

93.56

99.21

104.86

k

公称

17

18.7

21

22.5

25

26

28

30

33

35

38

40

最大值

17.9

19.75

22.05

23.55

26.05

27.05

29.05

31.05

34.25

36.25

39.25

41.25

最小值

16.1

17.65

19.95

21.45

23.95

24.95

26.95

28.95

31.75

33.75

36.75

38.75

kw

最小值

11.27

12.36

13.97

15.02

16.77

17.47

18.87

20.27

22.23

23.63

25.73

27.13

L1

最大值

6

6

6

6

6

8

8

10

10

12

12

13

r

最小值

1

1

1

1

1

1.2

1.2

1.6

1.6

2

2

2

s

最大值=公称

41

46

50

55

60

65

70

75

80

85

90

95

最小值

40

45

49

53.8

58.8

63.1

68.1

73.1

78.1

82.8

87.8

92.8

螺纹长度b（螺纹长度随公称长度变化）　mm

螺纹规格d

M5

M6

(M7)

M8

M10

M12

(M14)

M16

(M18)

M20

(M22)

M24

公称长度l /mm

螺纹长度b

25

16

-

-

-

-

-

-

-

-

-

-

-

30

16

18

-

-

-

-

-

-

-

-

-

-

35

16

18

20

-

-

-

-

-

-

-

-

-

40

16

18

20

22

-

-

-

-

-

-

-

-

45

16

18

20

22

26

-

-

-

-

-

-

-

50

16

18

20

22

26

30

-

-

-

-

-

-

55

-

18

20

22

26

30

34

-

-

-

-

-

60

-

18

20

22

26

30

34

-

-

-

-

-

65

-

-

20

22

26

30

34

38

-

-

-

-

70

-

-

20

22

26

30

34

38

42

-

-

-

80

-

-

-

22

26

30

34

38

42

46

-

-

90

-

-

-

-

26

30

34

38

42

46

50

54

100

-

-

-

-

26

30

34

38

42

46

50

54

110

-

-

-

-

-

30

34

38

42

46

50

54

120

-

-

-

-

-

30

34

38

42

46

50

54

130

-

-

-

-

-

-

40

44

48

52

56

60

140

-

-

-

-

-

-

40

44

48

52

56

60

150

-

-

-

-

-

-

-

44

48

52

56

60

160

-

-

-

-

-

-

-

44

48

52

56

60

180

-

-

-

-

-

-

-

-

48

52

56

60

200

-

-

-

-

-

-

-

-

-

52

56

60

220

-

-

-

-

-

-

-

-

-

-

69

73

240

-

-

-

-

-

-

-

-

-

-

-

73

260

-

-

-

-

-

-

-

-

-

-

-

-

280

-

-

-

-

-

-

-

-

-

-

-

-

300

-

-

-

-

-

-

-

-

-

-

-

-

320

-

-

-

-

-

-

-

-

-

-

-

-

340

-

-

-

-

-

-

-

-

-

-

-

-

360

-

-

-

-

-

-

-

-

-

-

-

-

380

-

-

-

-

-

-

-

-

-

-

-

-

400

-

-

-

-

-

-

-

-

-

-

-

-

420

-

-

-

-

-

-

-

-

-

-

-

-

440

-

-

-

-

-

-

-

-

-

-

-

-

460

-

-

-

-

-

-

-

-

-

-

-

-

480

-

-

-

-

-

-

-

-

-

-

-

-

500

-

-

-

-

-

-

-

-

-

-

-

-

质量kg

螺纹规格

M5

M6

(M7)

M8

M10

M12

(M14)

M16

(M18)

M20

(M22)

M24

(M27)

M30

(M33)

M36

(M39)

M42

(M45)

M48

(M52)

M56

(M60)

M64

公称长度

/mm

每1000件钢制品的质量  ≈

25

4.201

30

4.831

7.461

35

5.461

8.401

11.769

40

6.091

9.34

13.04

17.875

45

6.72

10.279

14.31

19.572

32.379

50

7.35

11.219

15.581

21.27

35.115

51.1

55

12.158

16.851

22.967

37.85

55.036

77.958

60

13.097

18.122

24.664

40.586

58.972

83.411

65

19.392

26.361

43.321

62.909

88.864

120.676

70

20.663

28.058

46.057

66.845

94.317

127.892

166.715

80

31.453

51.528

74.717

105.223

142.325

185.167

234.919

90

56.998

82.59

116.129

156.757

203.62

257.552

328.784

390.366

100

62.469

90.463

127.035

171.19

222.072

280.186

356.389

423.437

564.725

110

98.335

137.941

185.622

240.525

302.819

383.994

456.507

606.917

771.163

120

106.208

148.847

200.055

258.977

325.453

411.599

489.577

649.11

823.588

1027.909

130

159.066

213.693

276.121

346.818

437.798

520.559

688.932

872.678

1087.731

140

169.972

228.126

294.573

369.451

465.403

553.629

731.124

925.103

1150.864

1397.073

150

242.558

313.025

392.085

493.009

586.699

773.317

977.528

1213.998

1472.599

1798.557

160

256.991

331.478

414.718

520.614

619.77

815.509

1029.952

1277.131

1548.125

1887.585

2202.073

2605.75

180

368.382

459.985

575.824

685.91

899.894

1134.801

1403.398

1699.177

2065.641

2409.353

2844.474

3305.442

200

505.252

631.035

752.05

984.279

1239.65

1529.665

1850.228

2243.697

2616.633

3083.197

3577.828

4278.603

220

683.198

813.667

1063.529

1337.276

1648.758

1991.636

2411.251

2810.483

3307.471

3832.38

4579.039

5341.516

6263.003

7178.717

240

879.807

1147.914

1442.125

1775.025

2142.688

2589.307

3017.763

3546.194

4104.767

4897.251

5711.814

6689.331

7665.022

260

1232.298

1546.974

1901.292

2293.74

2767.363

3225.043

3784.917

4377.153

5215.464

6082.111

7115.659

8151.327

280

1651.823

2027.559

2444.791

2945.419

3432.323

4023.641

4649.539

5533.676

6452.408

7541.988

8637.632

300

1756.672

2153.825

2595.843

3123.475

3639.603

4262.364

4921.925

5851.888

6822.706

7968.316

9123.937

320

2280.092

2746.895

3301.531

3846.883

4501.088

5194.312

6170.101

7193.003

8394.644

9610.242

340

2897.947

3479.587

4054.163

4739.811

5466.698

6488.313

7563.301

8820.973

10096.547

360

3048.998

3657.643

4261.443

4978.534

5739.084

6806.525

7933.598

9247.301

10582.853

380

3835.699

4468.723

5217.258

6011.471

7124.737

8303.895

9673.629

11069.158

400

4676.003

5455.981

6283.857

7442.95

8674.193

10099.958

11555.463

420

4883.283

5694.704

6556.243

7761.162

9044.49

10526.286

12041.768

440

5933.428

6828.629

8079.374

9414.788

10952.614

12528.073

460

7101.016

8397.587

9785.085

11378.943

13014.378

480

7373.402

8715.799

10155.382

11805.271

13500.683

500

9034.011

10525.68

12231.599

13986.988

标记示例：

螺纹规格d＝M12、公称长度l＝80mm、性能等级为4.8级、不经表面处理、产品等级为C级的六角头螺栓的标记：

螺栓  GB/T 5780  M12×80

螺纹

规格

d

螺距

P

b（参考）

c

max

d_s

d_w

min

e

min

k

r

min

s

l的范围

l≤125

125＜l≤200

l＞200

max

min

公称

max

min

公称

＝max

min

M5

0.8

16

22

35

0.5

5.48

4.52

6.74

8.63

3.5

3.875

3.125

0.2

8.00

7.64

25～50

M6

1

18

24

37

0.5

6.48

5.52

8.74

10.89

4

4.375

3.625

0.25

10.00

9.64

30～60

M8

1.25

22

28

41

0.6

8.58

7.42

11.47

14.2

5.3

5.675

4.925

0.4

13.00

12.57

40～80

M10

1.5

26

32

45

0.6

10.58

9.42

14.47

17.59

6.4

6.85

5.95

0.4

16.00

15.57

45～100

M12

1.75

30

36

49

0.6

12.7

11.3

16.47

19.85

7.5

7.95

7.05

0.6

18.00

17.57

55～120

(M14)

2

34

40

53

0.6

14.7

13.3

19.15

22.78

8.8

9.25

8.35

0.6

21.00

20.16

60～140

M16

2

38

44

57

0.8

16.7

15.3

22

26.17

10

10.75

9.25

0.6

24.00

23.16

65～160

(M18)

2.5

42

48

61

0.8

18.7

17.3

24.85

29.56

11.5

12.4

10.6

0.6

27.00

26.16

80～180

M20

2.5

46

52

65

0.8

20.84

19.16

27.7

32.95

12.5

13.4

11.6

0.8

30.00

29.16

80～200

(M22)

2.5

50

56

69

0.8

22.84

21.16

31.35

37.29

14

14.9

13.1

0.8

34

33

90～220

M24

3

54

60

73

0.8

24.84

23.16

33.25

39.55

15

15.9

14.1

0.8

36

35

100～240

(M27)

3

60

66

79

0.8

27.84

26.16

38

45.2

17

17.9

16.1

1

41

40

110～260

M30

3.5

66

72

85

0.8

30.84

29.16

42.75

50.85

18.7

19.75

17.65

1

46

45

120～300

(M33)

3.5

—

78

91

0.8

34

32

46.55

55.37

21

22.05

19.95

1

50

49

130～320

M36

4

—

84

97

0.8

37

35

51.11

60.79

22.5

23.55

21.45

1

55.0

53.8

140～360

(M39)

4

—

90

103

1

40

38

55.86

66.44

25

23.95

26.05

1

60.0

58.8

150～400

M42

4.5

—

96

109

1

43

41

59.95

71.3

26

27.05

24.95

1.2

65.0

63.1

180～420

(M45)

4.5

—

102

115

1

46

44

64.7

76.95

28

26.95

29.05

1.2

70.0

68.1

180～440

M48

5

—

108

121

1

49

47

69.45

82.6

30

31.05

28.95

1.6

75.0

73.1

200～480

(M52)

5

—

116

129

1

53.2

50.8

74.2

88.25

33

31.75

34.25

1.6

80.0

78.1

200～500

M56

5.5

—

—

137

1

57.2

54.8

78.66

93.56

35

36.25

33.75

2

85.0

82.8

240～500

(M60)

5.5

—

—

145

1

61.2

58.8

83.41

99.21

38

36.75

39.25

2

90.0

87.8

240～500

M64

6

—

—

153

1

65.2

62.8

88.16

104.86

40

41.25

38.75

2

95.0

92.8

260～500

技术条件

材料

螺纹公差

机械性能等级

公差产品等级

表面处理

钢

8g

d≤39mm：3.6、4.6、4.8

d＞39mm：按协议

C级

不经处理

注：1．带括号的规格为非优选的螺纹规格。

2．螺纹末端无特殊要求。