Iso: 2768-mk

In the world of manufacturing, a single drawing is a contract. It promises that a hole will align with a shaft, that an edge will not cut a hand, and that a thousand identical parts will assemble without friction. But detailing every single dimension with a specific tolerance is time-consuming, expensive, and often unnecessary.

The result? Misaligned shafts, excess friction, and a full recall. iso 2768-mk

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. In the world of manufacturing, a single drawing

| 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 | The result

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.