Stud Bolt dimensions for ASME flanges.
| Nom Pipe Size (inches) |
Nom Pipe Size (mm) |
Number of bolts |
Dim (inch) x Length (mm) |
|---|---|---|---|
| 1/2 | 15 | 4 | 3/4 x 120 |
| 3/4 | 20 | 4 | 3/4 x 125 |
| 1 | 25 | 4 | 7/8 x 140 |
| 1 1/2 | 40 | 4 | 1 1/8 x 170 |
| 2 | 50 | 8 | 1 x 180 |
| 2 1/2 | 65 | 8 | 1 1/8 x 195 |
| 3 | 80 | 8 | 1 1/4 x 220 |
| 4 | 100 | 8 | 1 1/2 x 255 |
| 6 | 150 | 8 | 2 x 345 |
| 8 | 200 | 12 | 2 x 380 |
| 10 | 250 | 12 | 2 1/2 x 490 |
| 12 | 300 | 12 | 2 3/4 x 540 |