Thread Pitch (mm)
| Bolt Diameter (mm) | Standard | Fine | Extra or Super Fine | JIS |
| 2 | 0.4 | – | – | 0.4 |
| 2.5 | 0.45 | – | – | 0.45 |
| 3 | 0.5 | – | – | 0.5 |
| 4 | 0.7 | – | – | 0.7 |
| 5 | 0.8 | – | – | 0.8 |
| 6 | 1 | – | – | 1 |
| 7 | 1 | – | – | 1 |
| 8 | 1.25 | 1 | – | 1.25 |
| 10 | 1.5 | 1.25 | 1 | 1.25 |
| 12 | 1.75 | 1.5 | 1.25 | 1.25 |
| 14 | 2 | 1.5 | – | 1.5 |
| 16 | 2 | – | – | 1.5 |
| 18 | 2.5 | – | – | 1.5 |
| 20 | 2.5 | – | – | 1.5 |