Iso 2768-mk |work| May 2026

| Nominal size range (mm) | Permitted deviation (mm) | |------------------------|--------------------------| | 0.5 – 3 | ±0.1 | | >3 – 6 | ±0.1 | | >6 – 30 | ±0.2 | | >30 – 120 | ±0.3 | | >120 – 400 | ±0.5 | | >400 – 1000 | ±0.8 |

So next time you type into a title block, know that you are speaking a precise, efficient, and globally understood language — one that has quietly held the mechanical world together for decades. Want to dive deeper? The official standard is ISO 2768‑1:1989 (linear) and ISO 2768‑2:1989 (geometric). Check with your national standards body for the latest editions. iso 2768-mk

The result? Misaligned shafts, excess friction, and a full recall. | Nominal size range (mm) | Permitted deviation

When used correctly, it saves hours of drafting time, reduces quoting confusion, and keeps parts affordable. When misunderstood, it leads to assemblies that won’t close and suppliers who blame the drawing. Check with your national standards body for the

Enter — the shorthand of the engineering world. It is not a tool, but a rulebook. It tells the workshop: “For anything not explicitly stated, follow these limits.”