ANSI B16.5 Class 900 Lap Joint Flanges Bolt Circle 4-35.5 in

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Length Thru Hub (Y)

Hub Diameter (X)

Radius (r)

Bore (B)

Approximate Weight (lbs)

Bolt Circle (C)

Number of Holes

Diameter of Holes

 1/2

4.75

0.88

1.38

1.25

0.13

1.5

0.9

4

3.25

4

 3/4

5.13

1

1.69

1.38

0.13

1.75

1.11

5

3.5

4

1

5.88

1.13

2

1.63

0.13

2.06

1.38

8

4

4

1 1/4

6.25

1.13

2.5

1.63

0.19

2.5

1.72

9

4.38

4

1 1/2

7

1.25

2.88

1.75

0.25

2.75

1.97

12

4.88

4

2

8.5

1.5

3.63

2.25

0.31

4.13

2.46

25

6.5

8

2 1/2

9.63

1.63

4.13

2.5

0.31

4.88

2.97

35

7.5

8

3

9.5

1.5

2.13

5

0.38

3.6

25

7.5

8

1

4

11.5

1.75

2.75

6.25

0.44

4.6

51

9.25

8

1.25

5

13.75

2

3.13

7.5

0.5

5.69

81

11

8

1.38

6

15

2.19

3.38

9.25

0.5

6.75

105

12.5

12

1.25

8

18.5

2.5

4.5

11.75

0.5

8.75

190

15.5

12

1.5

10

21.5

2.75

5

14.5

0.5

10.92

275

18.5

16

1.5

12

24

3.13

5.63

16.5

0.5

12.92

370

21

20

1.5

14

25.25

3.38

6.13

17.75

0.5

14.18

415

22

20

1.63

16

27.75

3.5

6.5

20

0.5

16.19

465

24.25

20

1.75

18

31

4

7.5

22.25

0.5

18.2

650

27

20

2

20

33.75

4.25

8.25

24.5

0.5

20.25

810

29.5

20

2.13

24

41

5.5

10.5

29.5

0.5

24.25

1550

35.5

20

2.63