标准英制螺纹规格表【一览表】

英制普通螺纹 (惠氏螺纹) -- 小螺纹系列 (BA)

名义尺寸

牙型代号

大径

螺距

每英寸牙数

中径

小径

牙型高

底孔直径

BA

mm

mm

tpi

mm

外螺纹

H1

mm

d=D

p

d2=D2

d3

No. 14

BA

1

0.23

110.4

0.86

0.72

0.14

0.75

No. 13

BA

1.2

0.25

101.6

1.05

0.9

0.15

0.95

No. 12

BA

1.3

0.28

90.71

1.13

0.96

0.17

1

No. 11

BA

1.5

0.31

81.93

1.315

1.13

0.185

1.2

No. 10

BA

1.7

0.35

72.57

1.49

1.28

0.21

1.35

No. 9

BA

1.9

0.39

65.12

1.665

1.43

0.235

1.5

No. 8

BA

2.2

0.43

59.07

1.94

1.68

0.26

1.8

No. 7

BA

2.5

0.48

52.92

2.21

1.92

0.29

2

No. 6

BA

2.8

0.53

47.92

2.48

2.16

0.32

2.3

No. 5

BA

3.2

0.59

43.05

2.845

2.49

0.355

2.6

No. 4

BA

3.6

0.66

38.48

3.205

2.81

0.395

2.95

No. 3

BA

4.1

0.73

34.79

3.66

3.22

0.44

3.4

No. 2

BA

4.7

0.81

31.35

4.215

3.73

0.485

3.9

No. 1

BA

5.3

0.9

28.22

4.76

4.22

0.54

4.4

No. 0

BA

6

1

25.4

5.4

4.8

0.6

5

55°圆锥管螺纹型式和尺寸

螺纹代号

基本尺寸

大径

螺距

每英寸牙数

中径

小径

牙型高度

圆弧尺寸

底孔尺寸

英 寸

mm

mm

tpi

mm

外螺纹

H1

r

mm

d=D

p

d2=D2

d3

R 1/16

1/16＂

7.723

0.907

28

7.142

6.561

0.581

0.125

6.4

R 1/8

1/8＂

9.728

0.907

28

9.147

8.566

0.581

0.125

8.4

R 1/4

1/4＂

13.157

1.337

19

12.301

11.445

0.856

0.184

11.2

R 3/8

3/8＂

16.662

1.337

19

15.806

14.95

0.856

0.184

14.75

R 1/2

1/2＂

20.955

1.814

14

19.793

18.631

1.162

0.249

18.25

R 3/4

3/4＂

26.441

1.814

14

25.279

24.117

1.162

0.249

23.75

R 1

1＂

33.249

2.309

11

31.77

30.291

1.479

0.317

30

R 1 1/4

1 1/4＂

41.91

2.309

11

40.431

38.952

1.479

0.317

38.5

R 1 1/2

1 1/2＂

47.803

2.309

11

46.324

44.845

1.479

0.317

44.5

R 2

2＂

59.614

2.309

11

58.135

56.656

1.479

0.317

56

R 2 1/2

2 1/2＂

75.184

2.309

11

73.705

72.226

1.479

0.317

71

R 3

3＂

87.884

2.309

11

86.405

84.926

1.479

0.317

85.5

R 4

4＂

113.03

2.309

11

111.551

110.072

1.479

0.317

110.5

R 5

5＂

138.43

2.309

11

136.951

135.472

1.479

0.317

136

R 6

6＂

163.83

2.309

11

162.351

160.872

1.479

0.317

161.5

制惠氏螺纹的型式尺寸

英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)

名义尺寸

牙型代号

大径

螺距

每英寸牙数

中径

小径

牙型高

底孔直径

Ww

mm

mm

tpi

mm

外螺纹

H1

mm

d=D

p

d2=D2

d3

1/16＂

BSW

1.587

0.423

60

1.315

1.05

0.27

1.15

3/32＂

BSW

2.381

0.529

48

2.041

1.703

0.338

1.9

1/8＂

BSW

3.175

0.635

40

2.768

2.362

0.406

2.5

5/32＂

BSW

3.969

0.793

32

3.459

2.952

0.507

3.2

3/16＂

BSW

4.762

1.058

24

4.084

3.407

0.677

3.7

7/32＂

BSW

5.556

1.058

24

4.878

4.201

0.677

4.5

1/4＂

BSW

6.35

1.27

20

5.537

4.724

0.813

5.1

5/16＂

BSW

7.938

1.411

18

7.034

6.131

0.904

6.5

3/8＂

BSW

9.525

1.588

16

8.509

7.492

1.017

7.9

7/16＂

BSW

11.113

1.814

14

9.951

8.789

1.162

9.2

1/2＂

BSW

12.7

2.117

12

11.345

9.99

1.355

10.4

5/8＂

BSW

15.876

2.309

11

14.397

12.918

1.479

13.4

3/4＂

BSW

19.051

2.54

10

17.424

15.798

1.627

16.25

7/8＂

BSW

22.226

2.822

9

20.419

18.611

1.807

19.25

1＂

BSW

25.4

3.175

8

23.368

21.335

2.033

22

1 1/8＂

BSW

28.576

3.629

7

26.253

23.929

2.324

24.5

1 1/4＂

BSW

31.751

3.629

7

29.428

27.104

2.324

27.25

1 3/8＂

BSW

34.926

4.233

6

32.215

29.505

2.711

30.25

1 1/2＂

BSW

38.1

4.233

6

35.391

32.68

2.711

33.5

1 5/8＂

BSW

41.277

5.08

5

38.024

34.771

3.253

35.5

1 3/4＂

BSW

44.452

5.08

5

41.199

37.946

3.253

38.5

1 7/8＂

BSW

47.627

5.645

4 1/2

44.012

40.398

3.614

41.25

2＂

BSW

50.802

5.645

4 1/2

47.187

43.573

3.614

44.5

2 1/4＂

BSW

57.152

6.35

4

53.086

49.02

4.066

50

2 1/2＂

BSW

63.502

6.35

4

59.436

55.37

4.066

56

2 3/4＂

BSW

69.853

7.257

3 1/2

65.205

60.558

4.647

61.5

3＂

BSW

76.203

7.257

3 1/2

71.556

66.909

4.647

68

3 1/4＂

BSW

82.553

7.816

3 1/4

77.548

72.544

5.005

73.75

3 1/2＂

BSW

88.903

7.816

3 1/4

83.899

78.894

5.005

80

3 3/4＂

BSW

95.254

8.467

3

89.832

84.41

5.422

85.5

4＂

BSW

101.604

8.467

3

96.182

90.76

5.422

92

4 1/4＂

BSW

107.954

8.835

2 7/8

102.297

96.639

5.657

98

4 1/2＂

BSW

114.304

8.835

2 7/8

108.647

102.99

5.657

104.2

4 3/4＂

BSW

120.665

9.237

2 3/4

114.74

108.625

5.915

110

5＂

BSW

127.005

9.237

2 3/4

121.09

115.176

5.915

116.5

5 1/4＂

BSW

133.355

9.677

2 5/8

127.159

120.963

6.196

122.5

5 1/2＂

BSW

139.705

9.677

2 5/8

133.509

127.313

6.196

128.5

5 3/4＂

BSW

146.055

10.16

2 1/2

139.549

133.043

6.506

134.5

6＂

BSW

152.406

10.16

2 1/2

145.9

139.394

6.506

141

英制普通螺纹 -- 细牙 -- BSF

英制普通螺纹 (惠氏螺纹) -- 细牙 (BSW)

名义尺寸

牙型代号

大径

螺距

每英寸牙数

中径

小径

牙型高

底孔直径

BSF

mm

mm

tpi

mm

外螺纹

H1

mm

d=D

p

d2=D2

d3

3/16

BSF

4.763

0.794

32

4.255

3.747

0.508

4

7/32

BSF

5.556

0.907

28

4.975

4.394

0.581

4.6

1/4

BSF

6.35

0.977

26

5.725

5.1

0.625

5.3

9/32

BSF

7.142

0.977

26

6.518

5.893

0.625

6.1

5/16

BSF

7.938

1.156

22

7.199

6.459

0.739

6.8

3/8

BSF

9.525

1.27

20

8.712

7.899

0.813

8.3

7/16

BSF

11.113

1.411

18

10.209

9.304

0.904

9.7

1/2

BSF

12.7

1.588

16

11.684

10.668

1.017

11.1

9/16

BSF

14.288

1.588

16

13.272

12.256

1.017

12.7

5/8

BSF

15.875

1.814

14

14.712

13.549

1.162

14

11/16

BSF

17.463

1.814

14

16.3

15.137

1.162

15.5

3/4

BSF

19.05

2.117

12

17.693

16.336

1.355

16.75

13/16

BSF

20.638

2.117

12

19.281

17.924

1.355

18.25

7/8

BSF

22.225

2.309

11

20.747

19.269

1.479

19.75

1.00

BSF

25.4

2.54

10

23.774

22.148

1.627

22.75

1 1/8

BSF

28.575

2.822

9

26.769

24.963

1.807

26.5

1 1/4

BSF

31.75

2.822

9

29.944

28.138

1.807

28.75

1 3/8

BSF

34.925

3.175

8

32.893

30.861

2.033

31.5

1 1/2

BSF

38.1

3.175

8

36.068

34.036

2.033

34.5

1 5/8

BSF

41.275

3.175

8

39.243

37.211

2.033

38

1 3/4

BSF

44.45

3.629

7

42.126

39.802

2.324

40.5

2   

BSF

50.8

3.629

7

48.476

46.152

2.324

47

2 1/4

BSF

57.15

4.234

6

54.44

51.73

2.711

53

2 1/2

BSF

63.5

4.234

6

60.79

58.08

2.711

59

2 3/4

BSF

69.85

4.234

6

67.14

64.43

2.711

-

3   

BSF

76.2

5.08

5

72.946

69.692

3.253

-

3 1/4

BSF

82.55

5.08

5

79.296

76.042

3.253

-

3 1/2

BSF

88.9

5.645

4 1/2

85.285

81.67

3.614

-

3 3/4

BSF

95.25

5.645

4 1/2

91.635

88.02

3.614

-

4   

BSF

101.6

5.645

4 1/2

97.985

94.37

3.614

-

4 1/4

BSF

107.95

6.35

4

103.886

99.822

4.066

-

55°圆柱管螺纹的型式和尺寸

British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)

螺纹代号

基本尺寸

大径

螺距

每英寸牙数

中径

小径

牙型高度

底孔尺寸

mm

mm

tpi

mm

外螺纹

H1

mm

d=D

p

d2=D2

d3

G 1/8

1/8＂

9.728

0.907

28

9.147

8.566

0.581

8.7

G 1/4

1/4＂

13.157

1.337

19

12.301

11.445

0.856

11.6

G 3/8

3/8＂

16.662

1.337

19

15.806

14.95

0.856

15

G 1/2

1/2＂

20.955

1.814

14

19.793

18.631

1.162

19

G 5/8

5/8＂

22.911

1.814

14

21.749

20.587

1.162

20.75

G 3/4

3/4＂

26.441

1.814

14

25.279

24.117

1.162

24.5

G 7/8

7/8＂

30.201

1.814

14

29.039

27.877

1.162

28

G 1

1＂

33.249

2.309

11

31.77

30.291

1.479

30.5

G 1 1/8

1 1/8＂

37.897

2.309

11

36.418

34.939

1.479

35

G 1 1/4

1 1/4＂

41.91

2.309

11

40.431

38.952

1.479

39.5

G 1 3/8

1 3/8＂

44.323

2.309

11

42.844

41.365

1.479

41.5

G 1 1/2

1 1/2＂

47.803

2.309

11

46.324

44.845

1.479

45

G 1 3/4

1 3/4＂

53.746

2.309

11

52.267

50.788

1.479

51

G 2

2＂

59.614

2.309

11

58.135

56.656

1.479

57

G 2 1/4

2 1/4＂

65.71

2.309

11

64.231

62.752

1.479

63

G 2 1/2

2 1/2＂

75.184

2.309

11

73.705

72.226

1.479

72.5

G 2 3/4

2 3/4＂

81.534

2.309

11

80.055

78.576

1.479

79

G 3

3＂

87.884

2.309

11

86.405

84.926

1.479

85.5

G 3 1/4

3 1/4＂

93.98

2.309

11

92.501

91.022

1.479

91

G 3 1/2

3 1/2＂

100.33

2.309

11

98.351

97.372

1.479

97.75

G 3 3/4

3 3/4＂

106.68

2.309

11

105.201

103.722

1.479

104

G 4

4＂

113.03

2.309

11

111.55

110.072

1.479

110.5

G 4 1/2

4 1/2＂

125.73

2.309

11

124.251

122.772

1.479

123

G 5

5＂

138.43

2.309

11

136.951

135.472

1.479

136

G 5 1/2

5 1/2＂

151.13

2.309

11

149.651

148.172

1.479

148.5

G 6

6＂

163.83

2.309

11

162.351

160.872

1.479

161.5