4/27/2553

British standard pipe thread (BSP)


Nominal

Major

Minor Diameter

Tapping

Pitch

TPI

Pitch

Diameter

Diameter

Nut

Drill Size

Diameter

mm

D(mm)

d3 (mm)

mm

d2(mm)

G 1/8"

9,73

8,85

8,80

9.147

28

0,907

G 1/4"

13,16

11,89

11,80

12.301

19

1,337

G 3/8"

16,66

15,39

15,25

15.806

19

1,337

G 1/2"

20,95

19,17

19,00

19.793

14

1,814

G 5/8"

22,91

21,13

21,00

21.749

14

1,814

G 3/4"

26,44

24,66

24,50

25.279

14

1,814

G 7/8"

30,20

28,42

28,25

29.039

14

1,814

G 1"

33,25

30,93

30,75

31.77

11

2,309

G 1 1/8"

37,90

35,58

35,30

36.418

11

2,309

G 1 1/4"

41,91

39,59

39,25

40.431

11

2,309

G 1 3/8"

44,32

42,00

41,70

42.844

11

2,309

G 1 1/2"

47,80

45,48

45,25

46.324

11

2,309

G 1 3/4"

53,74

51,43

51,10

52.267

11

2,309

G 2"

59,61

57,29

57,00

58.135

11

2,309

G 2 1/4"

65,71

63,39

63,10

64.231

11

2,309

G 2 1/2"

75,18

72,86

72,60

73.705

11

2,309

G 2 3/4"

81,53

79,21

78,90

80.055

11

2,309

G 3"

87,88

85,56

85,30

86.405

11

2,309

G 3 1/4"

93,98

91,66

91,50

92.501

11

2,309

G 3 1/2"

100,33

98,01

97,70

98.351

11

2,309

G 3 3/4"

106,68

104,30

104,00

105.201

11

2,309

G 4"

113,03

110,71

110,40

111,55

11

2,309

G 4 1/2

125,73

122,772

123,00

124,251

11

2,309

G 5

138,43

135,472

136,00

136,951

11

2,309

G 5 1/2

151,13

148,172

148,50

149,651

11

2,309

G 6

163,83

160,872

161,50

162,351

11

2,309

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