Iso 2768-mk-e May 2026

These values apply per 100 mm of length. For longer lengths, the tolerance is prorated but limited by the maximum deviation.

| Tolerance Class | Straightness & Flatness (mm per 100 mm) | Perpendicularity & Symmetry (mm per 100 mm) | Runout (mm) | |----------------|------------------------------------------|----------------------------------------------|--------------| | | 0.2 | 0.5 | 0.2 | iso 2768-mk-e

For production shops, understanding this shorthand reduces errors and clarifies expectations. For designers, using it correctly (and knowing its limits) produces clear, manufacturable drawings without over-tolerancing. These values apply per 100 mm of length