The code is a shorthand instruction to the workshop and quality control. It consists of two independent specifications:
| Nominal Length (mm) | Tolerance (Class K) | | :--- | :--- | | Up to 100 | 0.40 mm | | Over 100 up to 300 | 0.60 mm | | Over 300 up to 1000 | 0.80 mm | Tolerance Iso 2768 Mk Pdf
If a drawing states ISO 2768-mK, the following limits apply automatically unless a specific tolerance is written next to the dimension. The code is a shorthand instruction to the
The K class tolerance equals the flatness tolerance for the shorter side of the angle. Tolerance Iso 2768 Mk Pdf