Focuses on linear and angular dimensions (e.g., length, radius, chamfer). It offers four classes: fine (f), medium (m), coarse (c), and very coarse (v). ISO 2768-2 (Part 2):
You don't have to clutter your CAD exports with "±" values for every single fillet or shoulder. iso 2768-mh tolerance chart
The "m" class provides standard permissible deviations based on the nominal length of the feature. Nominal Length Range (mm) Tolerance (± mm) Over 3 to 6 Over 6 to 30 Over 30 to 120 Over 120 to 400 Over 400 to 1000 Over 1000 to 2000 Over 2000 to 4000 Values sourced from ISO 2768-1 standards . ISO 2768-H (Geometrical Tolerances) Focuses on linear and angular dimensions (e
| Nominal Dimension (mm) | Flatness & Straightness | Perpendicularity | Symmetry | | :--- | :--- | :--- | :--- | | | 0.2 | 0.4 | 0.6 | | Over 10 up to 30 | 0.3 | 0.6 | 1.0 | | Over 30 up to 100 | 0.4 | 0.8 | 1.5 | | Over 100 up to 300 | 0.6 | 1.0 | 2.0 | The "m" class provides standard permissible deviations based