NPS

A

B

C

D

1/2

INCH

1

1.3/8

15/16

5/8

MM

25.4

34.92

23.81

15.87

3/4

INCH

1.1/16

1.5/8

1.3/16

13/16

MM

26.98

41.27

30.16

20.63

1

INCH

1.5/16

2

1.7/16

1.1/16

MM

33.33

50.8

36.51

26.98

1¼

INCH

1.5/16

2.3/8

1.3/4

1.3/8

MM

33.33

60.32

44.45

34.92

1½

INCH

1.3/8

2.7/8

2

1.5/8

MM

34.92

73.02

50.8

41.27

2

INCH

1½

3½

2.9/16

2.1/16

MM

38.1

88.9

65.08

52.38

2½

INCH

1.29/32

4.1/16

3

2½

MM

48.41

103.18

76.2

63.5

3

INCH

2

4.13/16

3.11/16

3.1/16

MM

50.8

122.23

93.66

77.78

3½

INCH

2.1/8

5.3/8

4.7/16

3.9/16

MM

53.97

136.52

112.71

90.48

4

INCH

2¼

6.1/16

4.3/4

4.1/16

MM

57.15

153.98

120.65

103.18

5

INCH

2.7/16

7¼

5¼

5¼

MM

61.91

184.15

133.35

133.35

6

INCH

2.3/4

8.11/16

5.3/4

5.3/4

MM

69.85

220.66

146.05

146.05