Iso 2768-mk-e Repack Now

| Feature Type | Rule | |--------------|------| | Length, width, height | ± mm from "M" linear table | | Hole diameter | Not covered (size tolerance must be given individually unless it's a general dimension) | | Hole position | Covered by "K" position tolerance (0.5 mm per 100 mm) | | Flatness of a surface | 0.2 mm per 100 mm (class K) | | Perpendicularity of a shoulder | 0.5 mm per 100 mm (class K) | | External fillet radius R5 | ±1.0 mm (since 5 mm is in >3–6 range, "E") | | Chamfer C2 | ±0.5 mm (from "E" table) |

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. iso 2768-mk-e

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

GENERAL TOLERANCES: ISO 2768-MK-E Alternatively: For longer lengths, the tolerance is prorated but

If a feature matters for function or fit, give it an explicit tolerance. ISO 2768-MK-E is for everything else.