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代號(hào)

基本直徑

d

25.4mm牙數(shù)

螺距

p

d1

l

L

a

12

G1/16

G1/16D

Rp1/16

7.723

28

0.970

5.6

14

52

4.5

7

G1/8

G1/8D

Rp1/8

9.728

28

0.970

8.0

15

59

6.3

9

G1/4

G1/4D

Rp1/4

13.157

19

1.337

10.0

19

67

8.0

11

G3/8

G3/8D

Rp3/8

16.662

19

1.337

12.5

21

75

10.0

13

G1/2

G1/2D

Rp1/2

20.955

14

1.814

16.0

26

87

12.5

16

(G5/8)

(G5/8D)

-

22.911

14

1.814

180

26

91

14.0

18

G3/4

G3/4D

Rp3/4

26.441

14

1.814

20.0

28

96

16.0

20

(G7/8)

(G7/8D)

-

30.201

11

2.309

22.4

29

102

18.0

22

G1

G1D

Rp1

33.249

11

2.309

25.0

33

109

20.0

24

(G1 1/8)

(G1 1/8D)

-

37.897

11

2.309

28.0

34

116

22.4

26

G1 1/4

G1 1/4D

Rp1 l/4

41.910

11

2.309

31.5

36

119

25.0

28

G1 1/2

G1 1/2D

Rp1 l/2

47.803

11

2.309

35.5

37

125

28.0

31

(G1 3/4)

(G1 3/4D)

-

53.746

11

2.309

35.5

39

132

28.0

31

G2

G2D

Rp2

59.614

11

2.309

40.0

41

140

31.5

34

(G21/4)

(G21/4D)

-

65.710

11

2.309

40.0

42

142

31.5

34

G2 1/2

G2 1/2D

Rp2 1/2

75.184

11

2.309

46.0

45

153

35.5

38

(G2 3/4)

(G2 3/4)

-

81.534

11

2.309

50.0

46

163

40.0

42

G3

G3D

Rp3

87.884

11

2.309

50.0

48

164

40.0

42

G3 1/2

G3 1/2D

Rp3 l/2

100.330

11

2.309

63.0

50

173

50.0

51

G4

G4D

Rp4

113.030

11

2.309

71.0

53

185

56.0

56