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《螺纹对照表1-2》

文章出处:http://www.kxyeya.com责任编辑:郑州科兴液压作者:郑州科兴液压人气:-发表时间:2015-07-07【

美制管螺纹基本尺寸及公差(牙形角60º)  UN(F)

螺纹代号

外螺纹

内螺纹

公差等级

公差等级

2A

2B

大径

中径

小径

小径

中径

大径

最大

最小

最大

最小

 

最小

最大

最小

最大

 

JIC螺纹

7/16″×20UNF

11.079

10.874

10.254

10.147

9.568

9.728

10.033

10.287

10.424

11.113

1/2″×20UNF

12.667

12.461

11.841

11.732

11.156

11.328

11.608

11.875

12.017

12.7

9/16″×18UNF

14.252

14.031

13.335

13.221

12.573

12.751

13.081

13.371

13.52

14.288

3/4″×16UNF

19.012

18.773

17.981

17.854

17.12

17.323

17.678

18.019

18.184

19.05

7/8″×14UNF

22.184

21.923

21.006

20.869

20.025

20.269

20.676

21.046

21.224

22.225

1-1/16″×12UN

26.944

26.655

25.57

25.425

24.425

24.689

25.146

25.613

25.801

26.988

1-5/16″×12UN

33.294

33.005

31.92

31.773

30.775

31.039

31.496

31.963

32.154

33.338

1-5/8″×12UN

41.229

40.94

39.885

39.705

38.71

38.989

39.446

39.901

40.094

41.275

1-7/8″×12UN

47.579

47.29

46.205

46.053

45.06

45.339

45.796

46.251

46.449

47.625

2-1/2″×12UN

63.452

63.162

62.078

61.92

60.932

61.214

61.671

62.126

62.332

63.5

ORFS螺纹

9/16″×18UNF

14.252

14.031

13.335

13.221

12.573

12.751

13.081

13.371

13.52

14.288

11/16″×16UN

17.427

17.188

16.396

16.274

15.535

15.748

16.104

16.431

16.589

17.463

13/16″×16UN

20.599

20.361

19.568

19.444

18.707

18.923

19.279

19.606

19.766

20.638

1″×14UNF

25.357

25.095

24.178

24.036

23.195

23.444

23.825

24.221

24.407

25.4

1-3/16″×12UN

30.119

29.83

28.745

28.598

27.6

27.864

28.321

28.788

28.979

30.163

1-7/16″×12UN

36.467

36.177

35.093

34.943

33.947

34.214

34.671

35.138

35.331

36.513

1-11/16″×12UN

42.817

42.527

41.443

41.29

40.297

40.564

41.021

41.488

41.686

42.863

2″×12UN

50.754

50.465

49.38

49.225

48.235

48.514

48.971

49.426

49.627

50.8

SAE螺纹

5/8″×18UNF

15.839

15.618

14.923

14.803

14.161

14.351

14.681

14.958

15.11

15.875

1-1/16″×14UN

26.947

26.683

25.743

25.608

24.74

24.968

25.375

25.783

25.961

26.987

其它美制螺纹

9/16″×16UN

14.252

14.013

13.221

13.101

12.36

12.573

12.929

13.256

13.411

14.288

7/8″×12UN

22.182

21.892

20.808

20.668

19.662

19.939

20.396

20.851

21.034

22.225

2-1/4″×12UN

57.104

56.815

55.73

55.575

54.585

54.864

55.321

55.776

55.976

57.15

注:UNC粗牙螺纹系列,UNF细牙螺纹系列, UNEF超细牙螺纹系列, UN不变螺距系列


 

布锥管螺纹基本尺寸及公差(牙形角60ºNPT

螺纹代号

基面上的直径

螺纹长度

大径

中径

小径

有效长度

管端至基面长

Z1/8″×27

10.272

9.519

8.766

7

4.572

Z1/4″×18

13.572

12.443

11.314

9.5

5.080

Z3/8″×18

17.055

15.926

14.797

10.5

6.096

Z1/2″×14

21.223

19.772

18.321

13.5

8.028

Z3/4″×14

26.568

25.117

23.666

14

8.611

Z1″×11.5

33.228

31.461

29.694

17.5

10.160

Z1.1/4″×11.5

41.985

40.218

38.451

18

10.688

Z1.1/2″×11.5

48.054

46.287

44.520

18.5

10.688

Z2″×11.5

60.092

58.325

56.558

19

11.074

 

 

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