Drilling and thickness data for AS 4087, ISO 7005 (DIN), AS 2129 and ANSI B16.5 flanges, nominal sizes 15mm to 400mm.
How to read these tables
Every table in this guide is read the same way. Outside diameter, pitch circle diameter, hole count and hole diameter describe the drilling; the last four columns give the minimum flange thickness for each material.
Outside diameter
The full diameter across the face of the flange.
Pitch circle diameter
The diameter of the circle running through the centre of the bolt holes.
Hole diameter
The diameter of each bolt hole, with the matching bolt size in the next column.
Minimum flange thickness
Given per material: cast iron, ductile iron, copper alloy and steel. A dash means the combination is not covered by the standard.
All dimensions are in millimetres unless shown otherwise. ANSI B16.5 hole and bolt diameters are given in inches with the millimetre equivalent.
Jump to nominal size
15mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 95 | 67 | 4 | 14 | M12 | - | - | 6 | - |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. Not covered at this size: PN16, PN21, PN35. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 80 | 55 | 4 | 11 | M10 | 12 | - | 6 | 12 |
| PN10 | 95 | 65 | 4 | 14 | M12 | 14 | - | 6 | 14 |
| PN16 | 95 | 65 | 4 | 14 | M12 | 14 | - | 6 | - |
| PN20 | 90 | 60.5 | 4 | 16 | M14 | - | - | - | 11.5 |
| PN25 | 95 | 65 | 4 | 14 | M12 | 16 | - | 8 | 14 |
| PN40 | 95 | 65 | 4 | 14 | M12 | 16 | - | 9 | 14 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 95 | 67 | 4 | 14 | M12 | 13 | 13 | 6 | 5 |
| Table D | 95 | 67 | 4 | 14 | M12 | 13 | 13 | 6 | 5 |
| Table E | 95 | 67 | 4 | 14 | M12 | 13 | 13 | 6 | 6 |
| Table F | 95 | 67 | 4 | 14 | M12 | 13 | 13 | 8 | 10 |
| Table H | 115 | 83 | 4 | 18 | M16 | 16 | 16 | 10 | 13 |
| ANSI B16.5 | |||||||||
| 150 | 90 | 60.3 | 4 | 5⁄8" - 15.9 | 1⁄2" - 12.7 | - | - | - | 11.2 |
| 300 | 95 | 66.7 | 4 | 5⁄8" - 15.9 | 1⁄2" - 12.7 | - | - | - | 14.3 |
| 600 | 95 | 66.7 | 4 | 5⁄8" - 15.9 | 1⁄2" - 12.7 | - | - | - | 14.3 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
20mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 100 | 73 | 4 | 14 | M12 | - | - | 6 | - |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. Not covered at this size: PN16, PN21, PN35. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 90 | 65 | 4 | 11 | M10 | 14 | - | 6 | 14 |
| PN10 | 105 | 75 | 4 | 14 | M12 | 16 | - | 6 | 16 |
| PN16 | 105 | 75 | 4 | 14 | M12 | 16 | - | 6 | - |
| PN20 | 100 | 70 | 4 | 16 | M14 | - | - | 8 | 13 |
| PN25 | 105 | 75 | 4 | 14 | M12 | 18 | - | 8 | 16 |
| PN40 | 105 | 75 | 4 | 14 | M12 | 18 | - | 9 | 16 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 100 | 73 | 4 | 14 | M12 | 13 | 13 | 6 | 5 |
| Table D | 100 | 73 | 4 | 14 | M12 | 13 | 13 | 6 | 5 |
| Table E | 100 | 73 | 4 | 14 | M12 | 13 | 13 | 6 | 6 |
| Table F | 100 | 73 | 4 | 14 | M12 | 13 | 13 | 8 | 10 |
| Table G | 115 | 83 | 4 | 18 | M16 | 16 | 16 | 10 | 13 |
| ANSI B16.5 | |||||||||
| 150 | 100 | 69.9 | 4 | 5⁄8" - 15.9 | 1⁄2" - 12.7 | - | - | - | 12.7 |
| 300 | 115 | 82.6 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 15.9 |
| 600 | 115 | 82.6 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 15.9 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
25mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 115 | 83 | 4 | 14 | M12 | - | - | 8 | - |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. Not covered at this size: PN16, PN21, PN35. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 100 | 75 | 4 | 11 | M10 | 14 | - | 8 | 14 |
| PN10 | 115 | 85 | 4 | 14 | M12 | 16 | - | 8 | 16 |
| PN16 | 115 | 85 | 4 | 14 | M12 | 16 | - | 8 | - |
| PN20 | 110 | 79.5 | 4 | 16 | M14 | 11 | 11 | 9 | 11.5 |
| PN25 | 115 | 85 | 4 | 14 | M12 | 18 | - | 9 | 16 |
| PN40 | 115 | 85 | 4 | 14 | M12 | 18 | - | 11 | 16 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 115 | 83 | 4 | 14 | M12 | 13 | 13 | 8 | 5 |
| Table D | 115 | 83 | 4 | 14 | M12 | 13 | 13 | 8 | 5 |
| Table E | 115 | 83 | 4 | 14 | M12 | 13 | 13 | 8 | 7 |
| Table F | 120 | 87 | 4 | 18 | M16 | 13 | 13 | 10 | 10 |
| Table H | 120 | 87 | 4 | 18 | M16 | 19 | 19 | 11 | 14 |
| ANSI B16.5 | |||||||||
| 150 | 110 | 79.4 | 4 | 5⁄8" - 15.9 | 1⁄2" - 12.7 | - | - | - | 14.3 |
| 300 | 125 | 88.9 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 17.5 |
| 600 | 125 | 88.9 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 17.5 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
32mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 120 | 87 | 4 | 14 | M12 | - | - | 8 | - |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. Not covered at this size: PN16, PN21, PN35. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 120 | 90 | 4 | 14 | M12 | 16 | - | 8 | 16 |
| PN10 | 140 | 100 | 4 | 18 | M16 | 18 | - | 8 | 18 |
| PN16 | 140 | 100 | 4 | 18 | M16 | 18 | - | 8 | - |
| PN20 | 120 | 89 | 4 | 16 | M14 | 13 | 13 | 10 | 13 |
| PN25 | 140 | 100 | 4 | 18 | M16 | 20 | - | 9 | 18 |
| PN40 | 140 | 100 | 4 | 18 | M16 | 20 | - | 11 | 18 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 120 | 87 | 4 | 14 | M12 | 16 | 16 | 8 | 6 |
| Table D | 120 | 87 | 4 | 14 | M12 | 16 | 16 | 8 | 6 |
| Table E | 120 | 87 | 4 | 14 | M12 | 16 | 16 | 8 | 8 |
| Table F | 135 | 98 | 4 | 18 | M16 | 16 | 16 | 10 | 13 |
| Table H | 135 | 98 | 4 | 18 | M16 | 22 | 22 | 11 | 17 |
| ANSI B16.5 | |||||||||
| 150 | 115 | 88.9 | 4 | 5⁄8" - 15.9 | 1⁄2" - 12.7 | - | - | - | 15.9 |
| 300 | 135 | 98.4 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 19.1 |
| 600 | 135 | 98.4 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 20.7 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
40mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 135 | 98 | 4 | 14 | M12 | - | - | 10 | - |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. Not covered at this size: PN16, PN21, PN35. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 130 | 100 | 4 | 14 | M12 | 16 | - | 9 | 16 |
| PN10 | 150 | 110 | 4 | 18 | M16 | 18 | 19 | 9 | 18 |
| PN16 | 150 | 110 | 4 | 18 | M16 | 18 | 19 | 9 | - |
| PN20 | 130 | 98.5 | 4 | 16 | M14 | 14.5 | 14.5 | 11 | 14.5 |
| PN25 | 150 | 110 | 4 | 18 | M16 | 20 | 19 | 11 | 18 |
| PN40 | 150 | 110 | 4 | 18 | M16 | 20 | 19 | 13 | 18 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 135 | 98 | 4 | 14 | M12 | 16 | 16 | 10 | 6 |
| Table D | 135 | 98 | 4 | 14 | M12 | 16 | 16 | 10 | 6 |
| Table E | 135 | 98 | 4 | 14 | M12 | 16 | 16 | 10 | 9 |
| Table F | 140 | 105 | 4 | 18 | M16 | 16 | 16 | 11 | 13 |
| Table H | 140 | 105 | 4 | 18 | M16 | 22 | 22 | 13 | 17 |
| ANSI B16.5 | |||||||||
| 150 | 125 | 98.4 | 4 | 5⁄8" - 15.9 | 1⁄2" - 12.7 | - | - | - | 17.5 |
| 300 | 155 | 114.3 | 4 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 20.7 |
| 600 | 155 | 114.3 | 4 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 22.3 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
50mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 150 | 114 | 4 | 18 | M16 | - | - | 10 | - |
| PN16 | 150 | 114 | 4 | 18 | M16 | - | - | - | 11 |
| PN21 | 165 | 127 | 4 | 18 | M16 | - | - | - | 15 |
| PN35 | 165 | 127 | 4 | 18 | M16 | - | - | - | 19 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 140 | 110 | 4 | 14 | M12 | 16 | - | 11 | 16 |
| PN10 | 165 | 125 | 4 | 18 | M16 | 20 | 19 | 11 | 20 |
| PN16 | 165 | 125 | 4 | 18 | M16 | 20 | 19 | 11 | - |
| PN20 | 150* | 120.5 | 4 | 18 | M16 | 16 | 16 | 13 | 16 |
| PN25 | 165 | 125 | 4 | 18 | M16 | 22 | 19 | 11 | 20 |
| PN40 | 165 | 125 | 4 | 18 | M16 | 22 | 19 | 13 | 20 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. *When made from cast or ductile iron, this flange features an outside diameter of 155mm. | |||||||||
| AS 2129 | |||||||||
| Table A | 150 | 114 | 4 | 18 | M16 | 16 | 16 | 10 | 8 |
| Table D | 150 | 114 | 4 | 18 | M16 | 17 | 17 | 10 | 8 |
| Table E | 150 | 114 | 4 | 18 | M16 | 19 | 19 | 10 | 10 |
| Table F | 165 | 127 | 4 | 18 | M16 | 19 | 19 | 11 | 16 |
| Table H | 165 | 127 | 4 | 18 | M16 | 25 | 25 | 13 | 19 |
| ANSI B16.5 | |||||||||
| 150 | 150 | 120.7 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 19.1 |
| 300 | 165 | 127 | 8 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 22.3 |
| 600 | 165 | 127 | 8 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 25.4 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
65mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 165 | 127 | 4 | 18 | M16 | - | - | 11 | - |
| PN16 | 165 | 127 | 4 | 18 | M16 | - | - | - | 11 |
| PN21 | 185 | 146 | 8 | 18 | M16 | - | - | - | 15 |
| PN35 | 185 | 146 | 8 | 18 | M16 | - | - | - | 19 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 160 | 130 | 4 | 14 | M12 | 16 | - | 12 | 16 |
| PN10 | 185 | 145 | 4* | 18 | M16 | 20 | 19 | 13 | 20 |
| PN16 | 185 | 145 | 4* | 18 | M16 | 20 | 19 | 13 | 20 |
| PN20 | 180 | 139.5 | 4 | 18 | M16 | 17.5 | 17.5 | 14 | 17.5 |
| PN25 | 185 | 145 | 8 | 18 | M16 | 24 | 19 | 13 | 22 |
| PN40 | 185 | 145 | 8 | 18 | M16 | 24 | 19 | 14 | 22 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. *When made from steel, these flanges feature 8 holes. | |||||||||
| AS 2129 | |||||||||
| Table A | 165 | 127 | 4 | 18 | M16 | 17 | 17 | 11 | 8 |
| Table D | 165 | 127 | 4 | 18 | M16 | 17 | 17 | 11 | 8 |
| Table E | 165 | 127 | 4 | 18 | M16 | 19 | 19 | 11 | 10 |
| Table F | 185 | 146 | 8 | 18 | M16 | 19 | 19 | 13 | 16 |
| Table H | 185 | 146 | 8 | 18 | M16 | 25 | 25 | 14 | 19 |
| ANSI B16.5 | |||||||||
| 150 | 180 | 139.7 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 22.3 |
| 300 | 190 | 149.2 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 25.4 |
| 600 | 190 | 149.2 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 28.6 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
80mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 185 | 146 | 4 | 18 | M16 | 19 | - | 13 | - |
| PN16 | 185 | 146 | 4 | 18 | M16 | - | 18 | - | 11 |
| PN21 | 205 | 165 | 8 | 18 | M16 | 19 | - | - | 15 |
| PN35 | 205 | 165 | 8 | 18 | M16 | 29 | 22 | - | 24 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 190 | 150 | 4 | 18 | M16 | 18 | - | 13 | 18 |
| PN10 | 200 | 160 | 8 | 18 | M16 | 22 | 19 | 13 | 20 |
| PN16 | 200 | 160 | 8 | 18 | M16 | 22 | 19 | 13 | 20 |
| PN20 | 190 | 152.5 | 4 | 18 | M16 | 19 | 19 | 16 | 19.5 |
| PN25 | 200 | 160 | 8 | 18 | M16 | 26 | 19 | 14 | 24 |
| PN40 | 200 | 160 | 8 | 18 | M16 | 26 | 19 | 16 | 24 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 185 | 146 | 4 | 18 | M16 | 17 | 17 | 13 | 10 |
| Table D | 185 | 146 | 4 | 18 | M16 | 19 | 19 | 13 | 10 |
| Table E | 185 | 146 | 4 | 18 | M16 | 19 | 19 | 13 | 11 |
| Table F | 205 | 165 | 8 | 18 | M16 | 19 | 19 | 14 | 16 |
| Table H | 205 | 165 | 8 | 18 | M16 | 29 | 29 | 16 | 22 |
| ANSI B16.5 | |||||||||
| 150 | 190 | 152.4 | 4 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 23.9 |
| 300 | 210 | 168.3 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 28.6 |
| 600 | 210 | 168.3 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 31.8 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
100mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 215 | 178 | 4 | 18 | M16 | 22 | - | 22 | - |
| PN16 | 215 | 178 | 4 | 18 | M16 | - | 20 | - | 13 |
| PN21 | 230 | 191 | 8 | 18 | M16 | 22 | - | - | 19 |
| PN35 | 230 | 191 | 8 | 18 | M16 | 32 | 22 | - | 24 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 210 | 170 | 4 | 18 | M16 | 18 | - | 14 | 18 |
| PN10 | 220 | 180 | 8 | 18 | M16 | 24 | 19 | 16 | 22 |
| PN16 | 220 | 180 | 8 | 18 | M16 | 24 | 19 | 16 | 22 |
| PN20 | 230 | 190.5 | 8 | 18 | M16 | 24 | 24 | 17 | 24 |
| PN25 | 235 | 190 | 8 | 22 | M20 | 28 | 19 | 17 | 24 |
| PN40 | 235 | 190 | 8 | 22 | M20 | 28 | 19 | 19 | 24 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 215 | 178 | 4 | 18 | M16 | 19 | 19 | 16 | 10 |
| Table D | 215 | 178 | 4 | 18 | M16 | 19 | 19 | 16 | 10 |
| Table E | 215 | 178 | 8 | 18 | M16 | 22 | 22 | 16 | 13 |
| Table F | 230 | 191 | 8 | 18 | M16 | 22 | 22 | 17 | 19 |
| Table H | 230 | 191 | 8 | 18 | M16 | 32 | 32 | 19 | 25 |
| ANSI B16.5 | |||||||||
| 150 | 230 | 190.5 | 8 | 3⁄4" - 19.1 | 5⁄8" - 15.9 | - | - | - | 23.9 |
| 300 | 255 | 200 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 31.8 |
| 600 | 275 | 215.9 | 8 | 1" - 25.4 | 7⁄8" - 22.2 | - | - | - | 38.1 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
125mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 280 | 235 | 8 | 18 | M16 | - | - | 22 | - |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. Not covered at this size: PN16, PN21, PN35. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 240 | 200 | 8 | 18 | M16 | 20 | - | 14 | 18 |
| PN10 | 250 | 210 | 8 | 18 | M16 | 26 | 19 | 18 | 22 |
| PN16 | 250 | 210 | 8 | 18 | M16 | 26 | 19 | 18 | 22 |
| PN20 | 255 | 216 | 8 | 22 | M20 | 24 | 24 | 19 | 24 |
| PN25 | 270 | 220 | 8 | 26 | M24 | 30 | 19 | 24 | 26 |
| PN40 | 270 | 220 | 8 | 26 | M24 | 30 | 23.5 | 24 | 26 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 255 | 210 | 4 | 18 | M16 | 19 | 19 | 17 | 13 |
| Table D | 255 | 210 | 8 | 18 | M16 | 21 | 21 | 17 | 13 |
| Table E | 255 | 210 | 8 | 18 | M16 | 22 | 22 | 17 | 14 |
| Table F | 280 | 235 | 8 | 22 | M20 | 25 | 25 | 19 | 22 |
| Table H | 280 | 235 | 8 | 22 | M20 | 35 | 35 | 22 | 29 |
| ANSI B16.5 | |||||||||
| 150 | 255 | 215.9 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 23.9 |
| 300 | 280 | 235 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 35 |
| 600 | 330 | 266.7 | 8 | 1 1⁄8" - 28.6 | 1" - 25.4 | - | - | - | 44.5 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
150mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 280 | 235 | 8 | 18 | M16 | 22 | - | 22 | - |
| PN16 | 280 | 235 | 8 | 18 | M16 | - | 23 | - | 13 |
| PN21 | 305 | 260 | 12 | 22 | M20 | 25 | - | - | 24 |
| PN35 | 305 | 260 | 12 | 22 | M20 | 35 | 27 | - | 31 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 265 | 225 | 8 | 18 | M16 | 20 | - | 14 | 20 |
| PN10 | 285 | 240 | 8 | 22 | M20 | 26 | 19 | 18 | 24 |
| PN16 | 285 | 240 | 8 | 22 | M20 | 26 | 19 | 18 | 24 |
| PN20 | 280 | 241.5 | 8 | 22 | M20 | 25.5 | 25.5 | 21 | 25.5 |
| PN25 | 300 | 250 | 8 | 26 | M24 | 34 | 20 | 24 | 28 |
| PN40 | 300 | 250 | 8 | 26 | M24 | 34 | 26 | 24 | 28 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 280 | 235 | 4 | 18 | M16 | 21 | 21 | 17 | 13 |
| Table D | 280 | 235 | 8 | 18 | M16 | 21 | 21 | 17 | 13 |
| Table E | 280 | 235 | 8 | 22 | M20 | 22 | 22 | 17 | 17 |
| Table F | 305 | 260 | 12 | 22 | M20 | 25 | 25 | 22 | 22 |
| Table H | 305 | 260 | 12 | 22 | M20 | 35 | 35 | 25 | 29 |
| ANSI B16.5 | |||||||||
| 150 | 280 | 241.3 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 25.4 |
| 300 | 320 | 269.9 | 12 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 36.6 |
| 600 | 355 | 292.1 | 12 | 1 1⁄8" - 28.6 | 1" - 25.4 | - | - | - | 47.7 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
200mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 335 | 292 | 8 | 18 | M16 | 25 | - | - | - |
| PN16 | 335 | 292 | 8 | 18 | M16 | - | 23 | - | 19 |
| PN21 | 370 | 324 | 12 | 22 | M20 | 29 | - | - | 24 |
| PN35 | 370 | 324 | 12 | 22 | M20 | 41 | 31 | - | 31 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 320 | 280 | 8 | 18 | M16 | 22 | - | 18 | 22 |
| PN10 | 340 | 295 | 8 | 22 | M20 | 26 | 20 | 20 | 24 |
| PN16 | 340 | 295 | 12 | 22 | M20 | 30 | 20 | 22 | 24 |
| PN20 | 345 | 298.5 | 8 | 22 | M20 | 28.5 | 28.5 | 24 | 29 |
| PN25 | 360 | 310 | 12 | 26 | M24 | 34 | 22 | 26 | 30 |
| PN40 | 375 | 320 | 12 | 29.5 | M27 | 40 | 30 | 30 | 34 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 335 | 292 | 8 | 18 | M16 | 22 | 22 | 19 | 13 |
| Table D | 335 | 292 | 8 | 18 | M16 | 22 | 22 | 19 | 13 |
| Table E | 335 | 292 | 8 | 22 | M20 | 25 | 25 | 19 | 19 |
| Table F | 370 | 324 | 12 | 22 | M20 | 29 | 29 | 25 | 25 |
| Table H | 370 | 324 | 12 | 22 | M20 | 38 | 38 | 32 | 32 |
| ANSI B16.5 | |||||||||
| 150 | 345 | 298.5 | 8 | 7⁄8" - 22.2 | 3⁄4" - 19.1 | - | - | - | 28.6 |
| 300 | 380 | 330.2 | 12 | 1" - 25.4 | 7⁄8" - 22.2 | - | - | - | 41.3 |
| 600 | 420 | 349.2 | 12 | 1 1⁄4" - 31.8 | 1 1⁄8" - 28.6 | - | - | - | 55.6 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
225mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 370 | 324 | 8 | 18 | M16 | 25 | - | - | - |
| PN16 | 370 | 324 | 8 | 18 | M16 | - | 24 | - | 19 |
| PN21 | 405 | 356 | 12 | 26 | M24 | 29 | - | - | 30 |
| PN35 | 405 | 356 | 12 | 26 | M24 | 41 | 34 | - | 38 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. Not covered at this size: PN6, PN10, PN16, PN20, PN25, PN40. | |||||||||
| AS 2129 | |||||||||
| Not covered at this size: Table A, Table D, Table E, Table F, Table H. | |||||||||
| ANSI B16.5 | |||||||||
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. Not covered at this size: 125/150, 300, 600. | |||||||||
250mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 405 | 356 | 8 | 22 | M20 | 25 | - | - | - |
| PN16 | 405 | 356 | 8 | 22 | M20 | - | 24 | - | 19 |
| PN21 | 430 | 381 | 12 | 26 | M24 | 32 | - | - | 30 |
| PN35 | 430 | 381 | 12 | 26 | M24 | 44 | 34 | - | 38 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 375 | 335 | 12 | 18 | M16 | 24 | - | 20 | 24 |
| PN10 | 395 | 350 | 12 | 22 | M20 | 28 | 22 | 22 | 26 |
| PN16 | 405 | 355 | 12 | 26 | M24 | 32 | 22 | 24 | 26 |
| PN20 | 405 | 362 | 12 | 26 | M24 | 30 | 30 | 25 | 30.5 |
| PN25 | 425 | 370 | 12 | 29.5 | M27 | 36 | 24.5 | 30 | 32 |
| PN40 | 450 | 385 | 12 | 32.5 | M30 | 46 | 34.5 | 36 | 38 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 405 | 356 | 8 | 22 | M20 | 24 | 24 | 19 | 16 |
| Table D | 405 | 356 | 8 | 22 | M20 | 25 | 25 | 19 | 16 |
| Table E | 405 | 356 | 12 | 22 | M20 | 25 | 25 | 22 | 22 |
| Table F | 430 | 381 | 12 | 26 | M24 | 29 | 29 | 25 | 25 |
| Table H | 430 | 381 | 12 | 26 | M24 | 41 | 41 | 35 | 35 |
| ANSI B16.5 | |||||||||
| 150 | 405 | 362 | 12 | 1" - 25.4 | 7⁄8" - 22.2 | - | - | - | 30.2 |
| 300 | 445 | 387.4 | 16 | 1 1⁄8" - 28.6 | 1" - 25.4 | - | - | - | 47.7 |
| 600 | 510 | 431.8 | 16 | 1 3⁄8" - 34.9 | 1 1⁄4" - 31.8 | - | - | - | 63.5 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
300mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 455 | 406 | 12 | 22 | M20 | 29 | - | - | - |
| PN16 | 455 | 406 | 12 | 22 | M20 | - | 30 | - | 23 |
| PN21 | 490 | 438 | 16 | 26 | M24 | 32 | - | - | 30 |
| PN35 | 490 | 438 | 16 | 26 | M24 | 44 | 38 | - | 38 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 440 | 395 | 12 | 22 | M20 | 24 | - | 22 | 24 |
| PN10 | 445 | 400 | 12 | 22 | M20 | 28 | 24.5 | 26 | 26 |
| PN16 | 460 | 410 | 12 | 26 | M24 | 32 | 24.5 | 28 | 28 |
| PN20 | 485 | 432 | 12 | 26 | M24 | 32 | 32 | 27 | 32 |
| PN25 | 485 | 430 | 16 | 29.5 | M27 | 40 | 27.5 | 32 | 34 |
| PN40 | 515 | 450 | 16 | 32.5 | M30 | 50 | 39.5 | 40 | 42 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 455 | 406 | 8 | 22 | M20 | 24 | 24 | 22 | 19 |
| Table D | 455 | 406 | 12 | 22 | M20 | 25 | 25 | 22 | 19 |
| Table E | 455 | 406 | 12 | 26 | M24 | 29 | 29 | 25 | 25 |
| Table F | 490 | 438 | 16 | 26 | M24 | 32 | 32 | 29 | 29 |
| Table H | 490 | 438 | 16 | 26 | M24 | 44 | 44 | 38 | 38 |
| ANSI B16.5 | |||||||||
| 150 | 485 | 431.8 | 12 | 1" - 25.4 | 7⁄8" - 22.2 | - | - | - | 31.8 |
| 300 | 520 | 450.8 | 16 | 1 1⁄4" - 31.8 | 1 1⁄8" - 28.6 | - | - | - | 50.8 |
| 600 | 560 | 489 | 20 | 1 3⁄8" - 34.9 | 1 1⁄4" - 31.8 | - | - | - | 66.7 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
350mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 525 | 470 | 12 | 26 | M24 | 32 | - | - | - |
| PN16 | 525 | 470 | 12 | 26 | M24 | - | 33 | - | 30 |
| PN21 | 550 | 495 | 16 | 30 | M27 | 35 | - | - | 30 |
| PN35 | 550 | 495 | 16 | 30 | M27 | 48 | 41 | - | 48 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 490 | 445 | 12 | 22 | M20 | 26 | - | 22 | 24 |
| PN10 | 505 | 460 | 16 | 22 | M20 | 30 | 24.5 | 26 | 26 |
| PN16 | 520 | 470 | 16 | 26 | M24 | 36 | 26.5 | 30 | 30 |
| PN20 | 535 | 476 | 12 | 29.5 | M27 | 35 | 35 | 35 | 35 |
| PN25 | 555 | 490 | 16 | 32.5 | M30 | 44 | 30 | 36 | 38 |
| PN40 | 580 | 510 | 16 | 35.5 | M33 | 54 | 44 | 46 | 46 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 525 | 470 | 8 | 26 | M24 | 25 | 25 | 25 | 22 |
| Table D | 525 | 470 | 12 | 26 | M24 | 29 | 29 | 25 | 22 |
| Table E | 525 | 470 | 12 | 26 | M24 | 32 | 32 | 25 | 25 |
| Table F | 550 | 495 | 16 | 30 | M27 | 35 | 35 | 32 | 32 |
| Table H | 550 | 495 | 16 | 30 | M27 | 48 | 48 | 41 | 41 |
| ANSI B16.5 | |||||||||
| 150 | 535 | 476.3 | 12 | 1 1⁄8" - 28.6 | 1" - 25.4 | - | - | - | 35 |
| 300 | 585 | 514.4 | 20 | 1 1⁄4" - 31.8 | 1 1⁄8" - 28.6 | - | - | - | 54 |
| 600 | 605 | 527 | 20 | 1 1⁄2" - 38.1 | 1 3⁄8" - 34.9 | - | - | - | 69.9 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
400mm nominal size
| Class / table | Outside diameter (mm) | Pitch circle diameter (mm) | No. holes | Hole diameter | Bolt diameter | Minimum flange thickness (mm) | |||
| Cast iron | Ductile iron | Copper alloy | Steel | ||||||
| AS 4087 | |||||||||
| PN14 | 580 | 521 | 12 | 26 | M24 | 32 | - | - | - |
| PN16 | 580 | 521 | 12 | 26 | M24 | - | 33 | - | 30 |
| PN21 | 610 | 552 | 20 | 30 | M27 | 35 | - | - | 38 |
| PN35 | 610 | 552 | 20 | 30 | M27 | 51 | 44 | - | 48 |
| Drilling for AS 4087 Class PN14 & PN16 is compatible with AS 2129, Table D. Drilling for Class PN21 & PN35 is compatible with AS 2129, Table F & Table H. | |||||||||
| ISO 7005 (DIN) | |||||||||
| PN6 | 540 | 495 | 16 | 22 | M20 | 28 | - | 22 | 24 |
| PN10 | 565 | 515 | 16 | 26 | M24 | 32 | 24.5 | 26 | 26 |
| PN16 | 580 | 525 | 16 | 29.5 | M27 | 38 | 28 | 32 | 32 |
| PN20 | 600 | 540 | 16 | 29.5 | M27 | 36.5 | 36.5 | 37 | 37 |
| PN25 | 620 | 550 | 16 | 35.5 | M33 | 48 | 32 | 38 | 40 |
| PN40 | 660 | 585 | 16 | 39 | M36 | 62 | 48 | 50 | 50 |
| Drilling compatible with AS/NZS 4331, BS 4504 & DIN 2533. | |||||||||
| AS 2129 | |||||||||
| Table A | 580 | 521 | 12 | 26 | M24 | 27 | 27 | 25 | 22 |
| Table D | 580 | 521 | 12 | 26 | M24 | 29 | 29 | 25 | 22 |
| Table E | 580 | 521 | 12 | 26 | M24 | 32 | 32 | 25 | 25 |
| Table F | 610 | 552 | 20 | 30 | M27 | 35 | 35 | 32 | 32 |
| Table H | 610 | 552 | 20 | 30 | M27 | 51 | 51 | 44 | 44 |
| ANSI B16.5 | |||||||||
| 150 | 595 | 539.8 | 16 | 1 1⁄8" - 28.6 | 1" - 25.4 | - | - | - | 36.6 |
| 300 | 650 | 571.5 | 20 | 1 3⁄8" - 34.9 | 1 1⁄4" - 31.8 | - | - | - | 57.2 |
| 600 | 685 | 603.2 | 20 | 1 5⁄8" - 41.3 | 1 1⁄2" - 38.1 | - | - | - | 76.2 |
| Drilling for ANSI B16.5, Class 150 is compatible with ANSI B16.1, Class 125. | |||||||||
The dimensions and standards described in this guide are provided for information purposes only. T-Rex Manufacturing does not accept liability for the accuracy of this information, and reference to the relevant standard is advised for confirmation.
For flange specification, materials and lead times, call us on 1300 480 080 or get in touch.