ANSI B16.5 Class150 Lap Joint Flange Steel Pipe Flange

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Bore

F

Diameter of Hub at Base

J

Length of Hub

M

Radius

R

Number of Bolt Holes

NBH

Diameter of Bolt Holes

 DBH

Bolt Circle Diameter

P

Approx Weight

(lb)

AW

1/2

3 1/2

7/16

0.90

1 3/16

5/8

1/8

4

5/8

2 3/8

2

3/4

3 7/8

1/2

1.11

1 1/2

5/8

1/8

4

5/8

2 3/4

2

1

4 1/4

9/16

1.38

1 15/16

11/16

1/8

4

5/8

3 1/8

2

1 1/4

4 5/8

5/8

1.72

2 5/16

13/16

3/16

4

5/8

3 1/2

3

1 1/2

5

11/16

1.97

2 9/16

7/8

1/4

4

5/8

3 7/8

3

2

6

3/4

2.46

3 1/16

1

5/16

4

3/4

4 3/4

5

2 1/2

7

7/8

2.97

3 9/16

1 1/8

5/16

4

3/4

5 1/2

7

3

7 1/2

15/16

3.60

4 1/4

1 3/16

3/8

4

3/4

6

8

3 1/2

8 1/2

15/16

4.10

4 13/16

1 1/4

3/8

8

3/4

7

11

4

9

15/16

4.60

5 5/16

1 5/16

7/16

8

3/4

7 1/2

13

5

10

15/16

5.69

6 7/16

1 7/16

7/16

8

7/8

8 1/2

15

6

11

1

6.75

7 9/16

1 9/16

1/2

8

7/8

9 1/2

19

8

13 1/2

1 1/8

8.75

9 11/16

1 3/4

1/2

8

7/8

11 3/4

30

10

16

1 3/16

10.92

12

1 15/16

1/2

12

1

14 1/4

43

12

19

1 1/4

12.92

14 3/8

2 3/16

1/2

12

1

17

64

14

21

1 3/8

14.18

15 3/4

3 1/8

1/2

12

1 1/8

18 3/4

99

16

23 1/2

1 7/16

16.19

18

3 7/16

1/2

16

1 1/8

21 1/4

128

18

25

1 9/16

18.20

19 7/8

3 13/16

1/2

16

1 1/4

22 3/4

146

20

27 1/2

1 11/16

20.25

22

4 1/16

1/2

20

1 1/4

25

185

22

29 1/2

1 13/16

22.25

24

4 1/4

1/2

20

1 3/8

27 1/4

245

24

32

1 7/8

24.25

26 1/8

4 3/8

1/2

20

1 3/8

29 1/2

260