管螺紋尺寸表

公稱直徑
(英寸)

每英寸
牙數n

螺距t

螺紋直徑

牙形高度
h1

圓弧半徑
r

外徑d

中徑d2

內徑d1

(1/8)

28

0.907

9.729

9.148

8.567

0.581

0.125

1/4

19

1.337

13.158

12.302

11.446

0.856

0.184

3/8

19

16.663

15.807

14.951

0.856

0.184

1/2

14

1.814

20.956

19.794

18.632

1.162

0.249

(5/8)

14

00.912

21.750

20.588

3/4

14

26.442

25.281

24.119

(7/8)

14

30.202

29.040

27.878

1

11

2.309

33.250

31.771

30.293

1.479

0.317

1.1/8

11

37.898

36.420

34.941

1.1/4

11

41.912

40.433

38.954

1.3/8

11

44.325

42.846

41.367

1.1/2

11

47.805

46.326

44.847

1.3/4

11

53.748

52.270

50.791

2

11

59.616

58.137

56.659

2.1/4

11

65.712

64.234

62.755

2.1/2

11

75.187

73.708

72.230

2.3/4

11

81.537

80.058

78.580

3

11

87.887

86.409

84.980

3.1/2

11

100.334

98.855

97.376

4

11

113.034

111.556

110.077

5

11

138.435

136.957

135.478

6

11

163.836

162.357

160.879