Class 900 Flange information

diameter

number of

diameter

stud bolt length

pipe size

outside

bolt circle

bolt hole

bolt holes

of bolts

1/4" raised face


0.50


4.75


3.25


0.875


4


0.750


4.25

0.75

5.12

3.50

0.875

4

0.750

4.50

1.00

5.88

4.00

1.000

4

0.875

5.00

1.25

6.25

4.38

1.000

4

0.875

5.00

1.50

7.00

4.88

1.125

4

1.000

5.50

2.00

8.50

6.50

1.000

8

0.875

5.75

2.50

9.62

7.50

1.125

8

1.000

6.25

3.00

9.50

7.50

1.000

8

0.875

5.75

4.00

11.50

9.25

1.250

8

1.125

6.75

5.00

13.75

11.00

1.375

8

1.250

7.50

6.00

15.00

12.50

1.250

12

1.125

7.50

8.00

18.50

15.50

1.500

12

1.375

8.75

10.00

21.50

18.50

1.500

16

1.375

9.25

12.00

24.00

21.00

1.500

20

1.375

10.00

14.00

25.25

22.00

1.625

20

1.500

10.75

16.00

27.75

24.25

1.750

20

1.625

11.25

18.00

31.00

27.00

2.000

20

1.875

12.75

20.00

33.75

29.50

2.125

20

2.000

13.75

24.00

41.00

35.50

2.625

20

2.500

17.25

24.00

37.00

33.00

2.000

24

1.875

13.00