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15

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25

32

40

50

65

80

100

125

150

200

250

300

350

400

450

500
Nominal Bore
15
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

3 1/2" / 89mm

2 3/8" / 60mm

4

1/2"

5/8" / 16mm

5/16" / 8mm

ANSI 600

3 3/4" / 95mm

2 5/8" / 67mm

4

1/2"

5/8" / 16mm

9/16" / 14mm

ANSI 900

4 3/4" / 121mm

3 1/4" / 83mm

4

3/4"

7/8" / 22mm

7/8" / 22mm

ANSI 1500

4 3/4" / 121mm

3 1/4" / 83mm

4

3/4"

7/8" / 22mm

7/8" / 22mm

Back to Nominal Bore index
Nominal Bore
20
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

3 7/8" / 98mm

2 3/4" / 70mm

4

1/2"

5/8" / 16mm

9/16" / 14mm

ANSI 300

4 5/8" / 117mm

3 1/4" / 83mm

4

5/8"

3/4" / 19mm

5/8" / 16mm

ANSI 600

4 5/8" / 117mm

3 1/4" / 83mm

4

5/8"

3/4" / 19mm

5/8" / 16mm

ANSI 900

5 1/8" / 130mm

3 1/2" / 89mm

4

3/4"

7/8" / 22mm

1" / 25mm

ANSI 1500

5 1/8" / 130mm

3 1/2" / 89mm

4

3/4"

7/8" / 22mm

1" / 25mm

Back to Nominal Bore index
Nominal Bore
25
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

4 1/4" / 108mm

3 1/8" / 79mm

4

1/2"

5/8" / 16mm

7/16" / 11mm

ANSI 300

4 7/8" / 124mm

3 1/2" / 89mm

4

5/8"

3/4" / 19mm

11/16" / 17mm

ANSI 600

4 7/8" / 124mm

3 1/2" / 89mm

4

5/8"

3/4" / 19mm

11/16" / 17mm

ANSI 900

5 7/8" / 149mm

4" / 102mm

4

7/8"

1" / 25mm

1 1/8" / 29mm

ANSI 1500

5 7/8" / 149mm

4" / 102mm

4

7/8"

1" / 25mm

1 1/8" / 29mm

Back to Nominal Bore index
Nominal Bore
32
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

4 5/8" / 117mm

3 1/2" / 89mm

4

1/2"

5/8" / 16mm

1/2" / 13mm

ANSI 300

5 1/4" / 133mm

3 7/8" / 98mm

4

5/8"

3/4" / 19mm

3/4" / 19mm

ANSI 600

5 1/4" / 133mm

3 7/8" / 98mm

4

5/8"

3/4" / 19mm

13/16" / 21mm

ANSI 900

6 1/4" / 159mm

4 3/8" / 111mm

4

7/8"

1" / 25mm

1 1/8" / 29mm

ANSI 1500

6 1/4" / 159mm

4 3/8" / 111mm

4

7/8"

1" / 25mm

1 1/8" / 29mm

Back to Nominal Bore index
Nominal Bore
40
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

5" / 127mm

3 7/8" / 98mm

4

1/2"

5/8" / 16mm

9/16" / 14mm

ANSI 300

6 1/8" / 156mm

4 1/2" / 114mm

4

3/4"

7/8" / 22mm

13/16" / 21mm

ANSI 600

6 1/8" / 156mm

4 1/2" / 114mm

4

3/4"

7/8" / 22mm

7/8" / 22mm

ANSI 900

7" / 178mm

4 7/8" / 124mm

4

1"

1 1/8" / 29mm

1 1/4" / 32mm

ANSI 1500

7" / 178mm

4 7/8" / 124mm

4

1"

1 1/8" / 29mm

1 1/4" / 32mm

Back to Nominal Bore index
Nominal Bore
50
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

6" / 152mm

4 3/4" / 121mm

4

5/8"

3/4" / 19mm

5/8" / 16mm

ANSI 300

6 1/2" / 165mm

5" / 127mm

8

5/8"

3/4" / 19mm

7/8" / 22mm

ANSI 600

6 1/2" / 165mm

5" / 127mm

8

5/8"

3/4" / 19mm

1" / 25mm

ANSI 900

8 1/2" / 216mm

6 1/2" / 165mm

8

7/8"

1" / 25mm

1 1/2" / 38mm

ANSI 1500

8 1/2" / 216mm

6 1/2" / 165mm

8

7/8"

1" / 25mm

1 1/2" / 38mm

Back to Nominal Bore index
Nominal Bore
65
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

7" / 178mm

5 1/2" / 140mm

4

5/8"

3/4" / 19mm

11/16" / 17mm

ANSI 300

7 1/2" / 191mm

5 7/8" / 149mm

8

3/4"

7/8" / 22mm

1" / 25mm

ANSI 600

7 1/2" / 191mm

5 7/8" / 149mm

8

3/4"

7/8" / 22mm

1 1/8" / 29mm

ANSI 900

9 5/8" / 244mm

7 1/2" / 191mm

8

1"

1 1/8" / 29mm

1 5/8" / 41mm

ANSI 1500

9 5/8" / 244mm

7 1/2" / 191mm

8

1"

1 1/8" / 29mm

1 5/8" / 41mm

Back to Nominal Bore index
Nominal Bore
80
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

7 1/2" / 191mm

6" / 152mm

4

5/8"

3/4" / 19mm

3/4" / 19mm

ANSI 300

8 1/4" / 210mm

6 5/8" / 168mm

8

3/4"

7/8" / 22mm

1 1/8" / 29mm

ANSI 600

8 1/4" / 210mm

6 5/8" / 168mm

8

3/4"

7/8" / 22mm

1 1/4" / 32mm

ANSI 900

9 1/2" / 241mm

7 1/2" / 191mm

8

7/8"

1" / 25mm

1 1/2" / 38mm

ANSI 1500

10 1/2" / 267mm

8" / 203mm

8

1 1/8"

1 1/4" / 32mm

1 7/8" / 48mm

Back to Nominal Bore index
Nominal Bore
100
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

9" / 229mm

7 1/2" / 191mm

8

5/8"

3/4" / 19mm

15/16" / 24mm

ANSI 300

10" / 254mm

7 7/8" / 200mm

8

3/4"

7/8" / 22mm

1 1/4" / 32mm

ANSI 600

10 3/4" / 273mm

8 1/2" / 216mm

8

7/8"

1" / 25mm

1 1/2" / 38mm

ANSI 900

11 1/2" / 292mm

9 1/4" / 235mm

8

1 1/8"

1 1/4" / 32mm

1 3/4" / 44mm

ANSI 1500

12 1/4" / 311mm

9 1/2" / 241mm

8

1 1/4"

1 3/8" / 35mm

2 1/8" / 54mm

Back to Nominal Bore index
Nominal Bore
125
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

10" / 254mm

8 1/2" / 216mm

8

3/4"

7/8" / 22mm

15/16" / 24mm

ANSI 300

11" / 279mm

9 1/4" / 235mm

8

3/4"

7/8" / 22mm

1 3/8" / 35mm

ANSI 600

13" / 330mm

10 1/2" / 267mm

8

1"

1 1/8" / 29mm

1 3/4" / 44mm

ANSI 900

13 3/4" / 349mm

11" / 279mm

8

1 1/4"

1 3/8" / 35mm

2" / 51mm

ANSI 1500

14 3/4" / 375mm

11 1/2" / 292mm

8

1 1/2"

1 5/8" / 41mm

2 7/8" / 73mm

Back to Nominal Bore index
Nominal Bore
150
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

11" / 279mm

9 1/2" / 241mm

8

3/4"

7/8" / 22mm

1" / 25mm

ANSI 300

12 1/2" / 318mm

10 5/8" / 270mm

12

3/4"

7/8" / 22mm

1 7/16" / 37mm

ANSI 600

14" / 356mm

11 1/2" / 292mm

12

1"

1 1/8" / 29mm

1 7/8" / 48mm

ANSI 900

15" / 381mm

12 1/2" / 318mm

12

1 1/8"

1 1/4" / 32mm

2 3/16" / 56mm

ANSI 1500

15 1/2" / 394mm

12 1/2" / 318mm

12

1 3/8"

1 1/2" / 38mm

3 1/4" / 83mm

Back to Nominal Bore index
Nominal Bore
200
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

13 1/2" / 343mm

11 3/4" / 298mm

8

3/4"

7/8" / 22mm

1 1/8" / 29mm

ANSI 300

15" / 381mm

13" / 330mm

12

7/8"

1" / 25mm

1 5/8" / 41mm

ANSI 600

16 1/2" / 419mm

13 3/4" / 349mm

12

1 1/8"

1 1/4" / 32mm

2 3/16" / 56mm

ANSI 900

18 1/2" / 470mm

15 1/2" / 394mm

12

1 3/8"

1 1/2" / 38mm

2 1/2" / 64mm

ANSI 1500

19" / 483mm

15 1/2" / 394mm

12

1 5/8"

1 3/4" / 44mm

3 5/8" / 92mm

Back to Nominal Bore index
Nominal Bore
250
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

16" / 406mm

14 1/4" / 362mm

12

7/8"

1" / 25mm

1 3/16" / 30mm

ANSI 300

17 1/2" / 445mm

15 1/4" / 387mm

16

1"

1 1/8" / 29mm

1 7/8" / 48mm

ANSI 600

20" / 508mm

17" / 432mm

16

1 1/4"

1 3/8" / 35mm

2 1/2" / 64mm

ANSI 900

21 1/2" / 546mm

18 1/2" / 470mm

16

1 3/8"

1 1/2" / 38mm

2 3/4" / 70mm

ANSI 1500

23" / 584mm

19" / 483mm

12

1 7/8"

2" / 51mm

4 1/4" / 108mm

Back to Nominal Bore index
Nominal Bore
300
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

19" / 483mm

17" / 432mm

12

7/8"

1" / 25mm

1 1/4" / 32mm

ANSI 300

20 1/2" / 521mm

17 3/4" / 451mm

16

1 1/8"

1 1/4" / 32mm

2" / 51mm

ANSI 600

22" / 559mm

19 1/4" / 489mm

20

1 1/4"

1 3/8" / 35mm

2 5/8" / 67mm

ANSI 900

24" / 610mm

21" / 533mm

20

1 3/8"

1 1/2" / 38mm

3 1/8" / 79mm

ANSI 1500

26 1/2" / 673mm

22 1/2" / 572mm

16

2"

2 1/8" / 54mm

4 7/8" / 124mm

Back to Nominal Bore index
Nominal Bore
350
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

21" / 533mm

18 3/4" / 476mm

12

1"

1 1/8" / 29mm

1 3/8" / 35mm

ANSI 300

23" / 584mm

20 1/4" / 514mm

20

1 1/8"

1 1/4" / 32mm

2 1/8" / 54mm

ANSI 600

23 3/4" / 603mm

20 3/4" / 527mm

20

1 3/8"

1 1/2" / 38mm

2 3/4" / 70mm

ANSI 900

25 1/4" / 641mm

22" / 559mm

20

1 1/2"

1 5/8" / 41mm

3 3/8" / 86mm

ANSI 1500

29 1/2" / 749mm

25" / 635mm

16

2 1/4"

2 3/8" / 60mm

5 1/4" / 133mm

Back to Nominal Bore index
Nominal Bore
400
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

23 1/2" / 597mm

21 1/4" / 540mm

16

1"

1 1/8" / 29mm

1 7/16" / 37mm

ANSI 300

25 1/2" / 648mm

22 1/2" / 572mm

20

1 1/4"

1 3/8" / 35mm

2 1/4" / 57mm

ANSI 600

27 1/2" / 699mm

23 3/4" / 603mm

20

1 1/2"

1 5/8" / 41mm

3" / 76mm

ANSI 900

27 3/4" / 705mm

24 1/4" / 616mm

20

1 5/8"

1 3/4" / 44mm

3 1/2" / 89mm

ANSI 1500

32 1/2" / 826mm

27 3/4" / 705mm

16

2 1/2"

2 5/8" / 67mm

5 3/4" / 146mm

Back to Nominal Bore index
Nominal Bore
450
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

25" / 635mm

22 3/4" / 578mm

16

1 1/8"

1 1/4" / 32mm

1 9/16" / 40mm

ANSI 300

28" / 711mm

24 3/4" / 629mm

24

1 1/4"

1 3/8" / 35mm

2 3/8" / 60mm

ANSI 600

29 1/4" / 743mm

25 3/4" / 654mm

20

1 5/8"

1 3/4" / 44mm

3 1/4" / 83mm

ANSI 900

31" / 787mm

27" / 686mm

20

1 7/8"

2" / 51mm

4" / 102mm

ANSI 1500

36" / 914mm

30 1/2" / 775mm

16

2 3/4"

2 7/8" / 73mm

6 3/8" / 162mm

Back to Nominal Bore index
Nominal Bore
500
Flange Diameter
PCD
Bolts
Boltsize
Hole Size
Thickness

ANSI 125/150

27 1/2" / 699mm

25" / 635mm

20

1 1/8"

1 1/4" / 32mm

1 11/16" / 43mm

ANSI 300

30 1/2" / 775mm

27" / 686mm

24

1 1/4"

1 3/8" / 35mm

2 1/2" / 64mm

ANSI 600

32" / 813mm

28 1/2" / 724mm

24

1 5/8"

1 3/4" / 44mm

3 1/2" / 89mm

ANSI 900

33 1/4" / 845mm

29 1/2" / 749mm

20

2"

2 1/8" / 54mm

4 1/4" / 108mm

ANSI 1500

38 3/4" / 984mm

32 3/4" / 832mm

16

3"

3 1/8" / 79mm

7" / 178mm

Back to Nominal Bore index

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