Lap Joint Flange
ASME/ANSI B16.5 Class 2500 Lap Joint Flanges/Loose Flanges
SPECIFICATIONS
▪ All dimensions are in inches
| Nominal Pipe Size |
Outside Diameter |
Thickness | Length Thru Hub |
Hub Diameter |
Radius | Bore | Approximate Weight | Bolt Circle | Number of Holes |
Diameter of Holes |
| (O) | (T) | (Y) | (X) | (r) | (B) | (lbs) | (C) | |||
| 1/2 | 5.25 | 1.19 | 1.56 | 1.69 | 0.13 | 0.90 | 7 | 3.50 | 4 | 0.88 |
| 3/4 | 5.50 | 1.25 | 1.69 | 2.00 | 0.13 | 1.11 | 8 | 3.75 | 4 | 0.88 |
| 1 | 6.25 | 1.38 | 1.88 | 2.25 | 0.13 | 1.38 | 11 | 4.25 | 4 | 1.00 |
| 1 1/4 | 7.25 | 1.50 | 2.06 | 2.88 | 0.19 | 1.72 | 16 | 5.13 | 4 | 1.13 |
| 1 1/2 | 8.00 | 1.75 | 2.38 | 3.13 | 0.25 | 1.97 | 22 | 5.75 | 4 | 1.25 |
| 2 | 9.25 | 2.00 | 2.75 | 3.75 | 0.31 | 2.46 | 37 | 6.75 | 8 | 1.13 |
| 2 1/2 | 10.50 | 2.25 | 3.13 | 4.50 | 0.31 | 2.97 | 53 | 7.75 | 8 | 1.25 |
| 3 | 12.00 | 2.63 | 3.63 | 5.25 | 0.38 | 3.60 | 80 | 9.00 | 8 | 1.38 |
| 4 | 14.00 | 3.00 | 4.25 | 6.50 | 0.38 | 4.60 | 120 | 10.75 | 8 | 1.63 |
| 5 | 16.50 | 3.63 | 5.13 | 8.00 | 0.44 | 5.69 | 205 | 12.75 | 8 | 1.88 |
| 6 | 19.00 | 4.25 | 6.00 | 9.25 | 0.44 | 6.75 | 315 | 14.50 | 8 | 2.13 |
| 8 | 21.75 | 5.00 | 7.00 | 12.00 | 0.50 | 8.75 | 470 | 17.25 | 12 | 2.13 |
| 10 | 26.50 | 6.50 | 9.00 | 14.75 | 0.50 | 10.92 | 900 | 21.25 | 12 | 2.63 |
| 12 | 30.00 | 7.25 | 10.00 | 17.38 | 0.50 | 12.92 | 1100 | 24.38 | 12 | 2.88 |