Stud Bolt dimensions for ASME flanges.
| Nom Pipe Size (inches) |
Nom Pipe Size (mm) |
Number of bolts |
Dia (inch) x Length (mm) |
|---|---|---|---|
| 1/2 | 15 | 4 | 3/4 x 110 |
| 3/4 | 20 | 4 | 3/4 x 115 |
| 1 | 25 | 4 | 7/8 x 125 |
| 1 1/2 | 40 | 4 | 1 x 140 |
| 2 | 50 | 8 | 7/8 x 145 |
| 2 1/2 | 65 | 8 | 1 x 160 |
| 3 | 80 | 8 | 7/8 x 145 |
| 4 | 100 | 8 | 1 1/8 x 170 |
| Nom Pipe Size (inches) |
Nom Pipe Size (mm) |
Number of bolts |
Dim (inch) x Length (mm) |
|---|---|---|---|
| 6 | 150 | 12 | 1 1/8 x 190 |
| 8 | 200 | 12 | 1 3/8 x 220 |
| 10 | 250 | 16 | 1 3/8 x 235 |
| 12 | 300 | 20 | 1 3/8 x 255 |
| 14 | 350 | 20 | 1 1/2 x 275 |
| 16 | 400 | 20 | 1 5/8 x 285 |
| 18 | 450 | 20 | 1 7/8 x 325 |
| 20 | 500 | 20 | 2 x 350 |
| 24 | 600 | 20 | 2 1/2 x 440 |