Iso 2768-mh Tolerance Chart

The ISO 2768-mh designation indicates a specific combination of general tolerances for a technical drawing. The first lowercase letter (m) refers to "medium" tolerances for linear and angular dimensions (Part 1), while the second uppercase letter (H) refers to the highest precision class for geometrical features (Part 2). Understanding ISO 2768-mh

Thus, the notation "ISO 2768-mh" instructs the manufacturer to apply the 'm' (medium) class from Part 1 for linear/angular dimensions, and the 'h' (fine) class from Part 2 for geometrical tolerances. iso 2768-mh tolerance chart

Straightness & Flatness: Ranges from 0.02 mm for lengths up to 10 mm, up to 0.5 mm for lengths over 1000 mm. The ISO 2768-mh designation indicates a specific combination

• You have many untoleranced dimensions
• Holes just need to clear fasteners or pins
• +/-0.2–0.5 mm is acceptable for your design

Global Standardization: Whether your part is being machined in Germany, the US, or China, "ISO 2768-mh" means exactly the same thing. How to Indicate it on Your Drawing You have many untoleranced dimensions Holes just need