Iso 2768: Angular Tolerance _top_

The standard provides a table of . The Short Version (Angular Tolerance Table) For Shorter leg length up to the specified range, here are the rough equivalents (always consult the official standard for production):

Instead, the permissible deviation is calculated based on the length of the shorter leg of the angle. Why? Because a 0.1mm gap at the tip of a 5mm corner is massive. The same 0.1mm gap at the tip of a 500mm beam is negligible. iso 2768 angular tolerance

For general tolerancing, ISO 2768-1 (for linear dimensions) gets all the attention. But its lesser-discussed sibling, , handles features like angles, chamfers, and tapers. Ignoring it is a fast track to rejected parts or inflated machining costs. The standard provides a table of

By choosing the right class (hint: start with ), you avoid paying for unnecessary precision on non-critical angles. And by understanding the leg-length rule, you won’t accidentally request aerospace tolerances on a simple sheet metal bracket. Because a 0

| Nominal Length of Shorter Side (mm) | Tolerance Class f (Fine) | Tolerance Class m (Medium) | Tolerance Class c (Coarse) | Tolerance Class v (Very Coarse) | | :--- | :--- | :--- | :--- | :--- | | 0 – 10 | ± 30′ | ± 1° | ± 1° 30′ | ± 3° | | 10 – 50 | ± 20′ | ± 40′ | ± 1° | ± 2° | | 50 – 120 | ± 10′ | ± 20′ | ± 30′ | ± 1° | | 120 – 400 | ± 5′ | ± 10′ | ± 15′ | ± 30′ | | > 400 | ± 2′ | ± 5′ | ± 10′ | ± 20′ |