General Tolerance Iso 2768-mk -

The first letter refers to (Linear & Angular tolerances). There are four classes:

Because it's an international standard, a part designed with ISO 2768-mK in Germany can be manufactured in Australia or the US with zero ambiguity. Breaking Down the Tables general tolerance iso 2768-mk

While there are other classes—such as "f" (fine) for high precision or "c" (coarse) for loose fits—the combination is the most widely used, representing about 80% of typical manufacturing requirements. The first letter refers to (Linear & Angular tolerances)

: Represents the Medium tolerance class for linear and angular dimensions (lengths, radii, angles). : Represents the Medium tolerance class for linear

| Feature | Requirement | Tolerance Class | Permissible Limit | | :--- | :--- | :--- | :--- | | | Linear Dimension | ISO 2768-m | 49.7 mm to 50.3 mm (Range 30-120, ±0.3) | | Length | Linear Dimension | ISO 2768-m | 199.5 mm to 200.5 mm (Range 120-400, ±0.5) | | Surface Flatness | Geometric | ISO 2768-K | Max deviation 0.4 mm (Range 100-300) | | End Perpendicularity | Geometric | ISO 2768-K | Max deviation 0.6 mm (Range 100-300) |

The "K" class defines general limits for the form and position of features. For example, surfaces with fitting dimensions must remain flat and parallel within the specified K-class range to ensure assembly functionality. 4. Technical Advantages