ISO Metric
ISO Metric Fine Thread, pitch 0.2–0.35
Fine pitches of 0.2, 0.25 and 0.35 mm for small diameters in instruments, optics and precision mechanisms.
- Standard
- DIN 13-2
- Flank angle
- 60°
- Sizes listed
- 103
- Range
- M 1.0 – M 50.0
| Nominal Diameter mm | Pitch mm | Tapping Drill Size mm (D − P) | Minor Diameter D1 mm |
|---|---|---|---|
| M 1.0 | 0.20 | 0.80 | 0.78 |
| M 1.1 | 0.20 | 0.90 | 0.88 |
| M 1.2 | 0.20 | 1.00 | 0.98 |
| M 1.4 | 0.20 | 1.20 | 1.18 |
| M 1.4 | 0.25 | 1.15 | 1.30 |
| M 1.6 | 0.20 | 1.40 | 1.38 |
| M 1.6 | 0.25 | 1.35 | 1.33 |
| M 1.8 | 0.20 | 1.60 | 1.58 |
| M 1.8 | 0.25 | 1.55 | 1.53 |
| M 2.0 | 0.20 | 1.80 | 1.78 |
| M 2.0 | 0.25 | 1.75 | 1.73 |
| M 2.0 | 0.35 | 1.6 | 1.62 |
| M 2.2 | 0.20 | 2.00 | 1.98 |
| M 2.2 | 0.25 | 1.95 | 1.93 |
| M 2.2 | 0.35 | 1.9 | 1.82 |
| M 2.5 | 0.20 | 2.30 | 2.28 |
| M 2.5 | 0.25 | 2.25 | 2.23 |
| M 2.5 | 0.35 | 2.1 | 2.12 |
| M 3.0 | 0.20 | 2.80 | 2.78 |
| M 3.0 | 0.25 | 2.75 | 2.73 |
| M 3.0 | 0.35 | 2.6 | 2.62 |
| M 3.5 | 0.20 | 3.30 | 3.28 |
| M 3.5 | 0.25 | 3.25 | 3.23 |
| M 3.5 | 0.35 | 3.1 | 3.12 |
| M 4.0 | 0.20 | 3.80 | 3.78 |
| M 4.0 | 0.25 | 3.75 | 3.73 |
| M 4.0 | 0.35 | 3.6 | 3.62 |
| M 4.5 | 0.20 | 4.30 | 4.28 |
| M 4.5 | 0.25 | 4.25 | 4.23 |
| M 4.5 | 0.35 | 4.2 | 4.12 |
| M 5.0 | 0.20 | 4.80 | 4.78 |
| M 5.0 | 0.25 | 4.75 | 4.73 |
| M 5.0 | 0.35 | 4.7 | 4.62 |
| M 5.5 | 0.20 | 5.30 | 5.28 |
| M 5.5 | 0.25 | 5.25 | 5.23 |
| M 5.5 | 0.35 | 5.2 | 5.12 |
| M 6.0 | 0.20 | 5.80 | 5.78 |
| M 6.0 | 0.25 | 5.75 | 5.73 |
| M 6.0 | 0.35 | 5.7 | 5.62 |
| M 6.5 | 0.20 | 6.30 | 6.28 |
| M 6.5 | 0.25 | 6.25 | 6.23 |
| M 6.5 | 0.35 | 6.2 | 6.12 |
| M 7.0 | 0.20 | 6.80 | 6.78 |
| M 7.0 | 0.25 | 6.75 | 6.73 |
| M 7.0 | 0.35 | 6.7 | 6.62 |
| M 7.5 | 0.20 | 7.30 | 7.28 |
| M 7.5 | 0.25 | 7.25 | 7.23 |
| M 7.5 | 0.35 | 7.2 | 7.12 |
| M 8.0 | 0.20 | 7.80 | 7.78 |
| M 8.0 | 0.25 | 7.75 | 7.73 |
| M 8.0 | 0.35 | 7.7 | 7.62 |
| M 8.5 | 0.20 | 8.30 | 8.28 |
| M 8.5 | 0.25 | 8.25 | 8.23 |
| M 8.5 | 0.35 | 8.2 | 8.12 |
| M 9.0 | 0.20 | 8.80 | 8.78 |
| M 9.0 | 0.25 | 8.75 | 8.73 |
| M 9.0 | 0.35 | 8.7 | 8.62 |
| M 9.5 | 0.20 | 9.30 | 9.28 |
| M 9.5 | 0.25 | 9.25 | 9.23 |
| M 9.5 | 0.35 | 9.2 | 9.12 |
| M 10.0 | 0.20 | 9.80 | 9.78 |
| M 10.0 | 0.25 | 9.75 | 9.73 |
| M 10.0 | 0.35 | 9.7 | 9.62 |
| M 10.5 | 0.35 | 10.2 | 10.12 |
| M 11.0 | 0.35 | 10.7 | 10.62 |
| M 11.5 | 0.35 | 11.2 | 11.12 |
| M 12.0 | 0.35 | 11.7 | 11.62 |
| M 12.5 | 0.35 | 12.2 | 12.12 |
| M 13.0 | 0.35 | 12.7 | 12.62 |
| M 13.5 | 0.35 | 13.2 | 13.12 |
| M 14.0 | 0.35 | 13.7 | 13.62 |
| M 14.5 | 0.35 | 14.2 | 14.12 |
| M 15.0 | 0.35 | 14.7 | 14.62 |
| M 15.5 | 0.35 | 15.2 | 15.12 |
| M 16.0 | 0.35 | 15.7 | 15.62 |
| M 17.0 | 0.35 | 16.6 | 16.62 |
| M 18.0 | 0.35 | 17.6 | 17.62 |
| M 19.0 | 0.35 | 18.6 | 18.62 |
| M 20.0 | 0.35 | 19.6 | 19.62 |
| M 21.0 | 0.35 | 20.6 | 20.62 |
| M 22.0 | 0.35 | 21.6 | 21.62 |
| M 23.0 | 0.35 | 22.6 | 22.62 |
| M 24.0 | 0.35 | 23.6 | 23.62 |
| M 25.0 | 0.35 | 24.6 | 24.62 |
| M 26.0 | 0.35 | 25.6 | 25.62 |
| M 27.0 | 0.35 | 26.6 | 26.62 |
| M 28.0 | 0.35 | 27.6 | 27.62 |
| M 29.0 | 0.35 | 28.6 | 28.62 |
| M 30.0 | 0.35 | 29.6 | 29.62 |
| M 31.0 | 0.35 | 30.6 | 30.62 |
| M 32.0 | 0.35 | 31.6 | 31.62 |
| M 33.0 | 0.35 | 32.6 | 32.62 |
| M 34.0 | 0.35 | 33.6 | 33.62 |
| M 35.0 | 0.35 | 34.6 | 34.62 |
| M 36.0 | 0.35 | 35.6 | 35.62 |
| M 37.0 | 0.35 | 36.6 | 36.62 |
| M 38.0 | 0.35 | 37.6 | 37.62 |
| M 39.0 | 0.35 | 38.6 | 38.62 |
| M 40.0 | 0.35 | 39.6 | 39.62 |
| M 42.0 | 0.35 | 41.6 | 41.62 |
| M 45.0 | 0.35 | 44.6 | 44.62 |
| M 48.0 | 0.35 | 47.6 | 47.62 |
| M 50.0 | 0.35 | 49.6 | 49.62 |
Reference values only. Verify against the current edition of the governing standard before use in production drawings or manufacturing. Provided by Micro Components as a free engineering resource.