Table 6 AWWA C207-18 Class F Ring Flanges
| Nominal Pipe Size | Outside Diameter (A) | Thickness (T) | Inside Diameter (B) | Approximate Weight | Number of Bolt Holes | Diameter of Bolt Holes | Diameter of Bolt Circle (C) |
|---|---|---|---|---|---|---|---|
| 4 | 10.00 mm | 1.13 mm | 4.57 mm | 18 lb | 8 | 0.88 mm | 7.88 mm |
| 5 | 11.00 mm | 1.21 mm | 5.66 mm | 22 lb | 8 | 0.88 mm | 9.25 mm |
| 6 | 12.50 mm | 1.31 mm | 6.73 mm | 30 lb | 12 | 0.88 mm | 10.62 mm |
| 8 | 15.00 mm | 1.31 mm | 8.73 mm | 40 lb | 12 | 1.00 mm | 13.00 mm |
| 10 | 17.50 mm | 1.50 mm | 10.88 mm | 56 lb | 16 | 1.13 mm | 15.25 mm |
| 12 | 20.50 mm | 1.63 mm | 12.88 mm | 83 lb | 16 | 1.25 mm | 17.75 mm |
| 14 | 23.00 mm | 1.94 mm | 14.19 mm | 128 lb | 20 | 1.25 mm | 20.25 mm |
| 16 | 25.50 mm | 2.14 mm | 16.19 mm | 167 lb | 20 | 1.38 mm | 22.50 mm |
| 18 | 28.00 mm | 2.25 mm | 18.19 mm | 204 lb | 24 | 1.38 mm | 24.75 mm |
| 20 | 30.50 mm | 2.33 mm | 20.19 mm | 247 lb | 24 | 1.38 mm | 27.00 mm |
| 22 | 33.00 mm | 2.50 mm | 22.19 mm | 307 lb | 24 | 1.38 mm | 29.25 mm |
| 24 | 36.00 mm | 2.69 mm | 24.19 mm | 388 lb | 24 | 1.63 mm | 32.00 mm |
| 26 | 38.25 mm | 3.00 mm | 26.25 mm | 451 lb | 28 | 1.88 mm | 34.50 mm |
| 28 | 40.75 mm | 3.13 mm | 28.25 mm | 532 lb | 28 | 1.88 mm | 37.00 mm |
| 30 | 43.00 mm | 3.15 mm | 30.25 mm | 586 lb | 28 | 1.88 mm | 39.25 mm |
| 32 | 45.25 mm | 3.25 mm | 32.25 mm | 657 lb | 28 | 1.88 mm | 41.50 mm |
| 34 | 47.50 mm | 3.38 mm | 34.25 mm | 741 lb | 28 | 1.88 mm | 43.50 mm |
| 36 | 50.00 mm | 3.46 mm | 36.25 mm | 802 lb | 32 | 2.13 mm | 46.00 mm |
| 38 | 52.25 mm | 3.50 mm | 38.25 mm | 874 lb | 32 | 2.13 mm | 48.00 mm |
| 40 | 54.25 mm | 3.63 mm | 40.25 mm | 937 lb | 36 | 2.13 mm | 50.25 mm |
| 42 | 57.00 mm | 3.81 mm | 42.25 mm | 1103 lb | 36 | 2.13 mm | 52.75 mm |
| 44 | 59.25 mm | 4.00 mm | 44.25 mm | 1237 lb | 36 | 2.13 mm | 55.00 mm |
| 46 | 61.50 mm | 4.13 mm | 46.25 mm | 1344 lb | 40 | 2.13 mm | 57.25 mm |
| 48 | 65.00 mm | 4.50 mm | 48.25 mm | 1718 lb | 40 | 2.13 mm | 60.75 mm |