Iso 2768-mh Tolerance Chart Fixed Jun 2026
an international manufacturing standard that simplifies technical drawings by providing general tolerances for machined parts
The "H" class establishes general tolerances for the form and position of features, ensuring parts fit together correctly in an assembly. General Tolerance - ISO 2768 1 & 2 - ZEISS Quality Forum
For angles:
This standard does not apply to screw thread tolerances. The material you are using (metal, plastic, etc.) The manufacturing process (CNC milling, 3D printing, etc.)
It ensures that parts made in different facilities fit together correctly. 6. When Should You NOT Use ISO 2768-mh? While beneficial, general tolerances are not suitable for: iso 2768-mh tolerance chart
Specifically, is a combination of two parts representing a "medium" class for linear dimensions and a "high" class for geometrical features. This article provides a comprehensive overview of the ISO 2768-mh tolerance chart , how to read it, and its application in modern manufacturing. 1. What is ISO 2768?
Runout tolerance = for all nominal sizes (independent of diameter). This article provides a comprehensive overview of the
is a common engineering callout used to define general tolerances for parts where specific accuracy is not individually labeled. It combines Medium (m) precision for linear and angular dimensions with High (H) precision for geometric characteristics. 📐 Linear Dimensions (m - Medium)
| Nominal Dimension Range (mm) | Tolerance (mm) | | :--- | :--- | | | $\pm 0.1$ | | Over 3 up to 6 | $\pm 0.1$ | | Over 6 up to 30 | $\pm 0.2$ | | Over 30 up to 120 | $\pm 0.3$ | | Over 120 up to 400 | $\pm 0.5$ | | Over 400 up to 1000 | $\pm 0.8$ | | Over 1000 up to 2000 | $\pm 1.2$ | | Over 2000 up to 4000 | $\pm 2.0$ | how to read it
In the world of mechanical engineering and CNC machining, precision is not just a goal—it is a necessity. However, specifying tolerances for every single dimension on a technical drawing can create cluttered, confusing, and unnecessarily complex blueprints. To solve this, the International Organization for Standardization developed the .
