| Thread Size | Tap Drill Size(mm) |
| M1 x 0.25 | 0.75 |
| M1.1 x 0.25 | 0.85 |
| M1.2 x 0.25 | 0.95 |
| M1.4 x 0.3 | 1.10 |
| M1.6 x 0.35 | 1.25 |
| M1.8 x 0.35 | 1.45 |
| M2 x 0.4 | 1.60 |
| M2.2 x 0.45 | 1.75 |
| M2.5 x 0.45 | 2.05 |
| M3 x 0.5 | 2.50 |
| M3.5 x 0.6 | 2.90 |
| M4 x 0.7 | 3.30 |
| M4.5 x 0.75 | 3.70 |
| M5 x 0.8 | 4.20 |
| M6 x 1 | 5.00 |
| M7 x 1 | 6.00 |
| M8 x 1.25 | 6.80 |
| M9 x 1.25 | 7.80 |
| M10 x 1.5 | 8.50 |
| M11 x 1.5 | 9.50 |
| M12 x 1.75 | 10.20 |
| M14 x 2 | 12.00 |
| M16 x 2 | 14.00 |
| M18 x 2.5 | 15.50 |
| M20 x 2.5 | 17.50 |