Flange – Lap Joint, ANSI Class 300, ASME B16.5, Flat Face (in)
- Dimensions and tolerances in accordance with ANSI/ASME B16.5 for sizes 1/2″ to 24″.
- Carbon steel forgings in accordance with ASTM A105.
- Bolt circle diameters are 1/8 inch larger than bolt diameter.
- 1/4″ raised face is not included in dimension “C” and “M”.
| Pipe Size(NPS) | OutsideDiameter of Flange A | Thicknessof Flange C | DiameterOf Bore F | Diameterof Hub at Base J | Lengthof Hub M | Radius R | Numberof Bolt Holes | Diameterof Bolt Holes | BoltCircle Diameter P | Approx.Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 3 3/4 | 9/16 | 0.90 | 1 1/2 | 7/8 | 1/8 | 4 | 5/8 | 2 5/8 | 3 |
| 3/4 | 4 5/8 | 5/8 | 1.11 | 1 7/8 | 1 | 1/8 | 4 | 3/4 | 3 1/4 | 3 |
| 1 | 4 7/8 | 11/16 | 1.38 | 2 1/8 | 1 1/16 | 1/8 | 4 | 3/4 | 3 1/2 | 3 |
| 1 1/4 | 5 1/4 | 3/4 | 1.72 | 2 1/2 | 1 1/16 | 3/16 | 4 | 3/4 | 3 7/8 | 4 |
| 1 1/2 | 6 1/8 | 13/16 | 1.97 | 2 3/4 | 1 3/16 | 1/4 | 4 | 7/8 | 4 1/2 | 6 |
| 2 | 6 1/2 | 7/8 | 2.46 | 3 5/16 | 1 5/16 | 5/16 | 8 | 3/4 | 5 | 7 |
| 2 1/2 | 7 1/2 | 1 | 2.97 | 3 15/16 | 1 1/2 | 5/16 | 8 | 7/8 | 5 7/8 | 10 |
| 3 | 8 1/4 | 1 1/8 | 3.60 | 4 5/8 | 1 11/16 | 3/8 | 8 | 7/8 | 6 5/8 | 13 |
| 3 1/2 | 9 | 1 3/16 | 4.10 | 5 1/4 | 1 3/4 | 3/8 | 8 | 7/8 | 7 1/4 | 17 |
| 4 | 10 | 1 1/4 | 4.60 | 5 3/4 | 1 7/8 | 7/16 | 8 | 7/8 | 7 7/8 | 22 |
| 5 | 11 | 1 3/8 | 5.69 | 7 | 2 | 7/16 | 8 | 7/8 | 9 1/4 | 28 |
| 6 | 12 1/2 | 1 7/16 | 6.75 | 8 1/8 | 2 1/16 | 1/2 | 12 | 7/8 | 10 5/8 | 39 |
| 8 | 15 | 1 5/8 | 8.75 | 10 1/4 | 2 7/16 | 1/2 | 12 | 1 | 13 | 58 |
| 10 | 17 1/2 | 1 7/8 | 10.92 | 12 5/8 | 3 3/4 | 1/2 | 16 | 1 1/8 | 15 1/4 | 91 |
| 12 | 20 1/2 | 2 | 12.92 | 14 3/4 | 4 | 1/2 | 16 | 1 1/4 | 17 3/4 | 139 |
| 14 | 23 | 2 1/8 | 14.18 | 16 3/4 | 4 3/8 | 1/2 | 20 | 1 1/4 | 20 1/4 | 189 |
| 16 | 25 1/2 | 2 1/4 | 16.19 | 19 | 4 3/4 | 1/2 | 20 | 1 3/8 | 22 1/2 | 240 |
| 18 | 28 | 2 3/8 | 18.20 | 21 | 5 1/8 | 1/2 | 24 | 1 3/8 | 24 3/4 | 305 |
| 20 | 30 1/2 | 2 1/2 | 20.25 | 23 1/8 | 5 1/2 | 1/2 | 24 | 1 3/8 | 27 | 375 |
| 22 | 33 | 2 5/8 | 22.25 | 25 1/4 | 5 3/4 | 1/2 | 24 | 1 5/8 | 29 1/4 | 435 |
| 24 | 36 | 2 3/4 | 24.25 | 27 5/8 | 6 | 1/2 | 24 | 1 5/8 | 32 | 530 |