The tolerance values for angular dimensions according to ISO 2768 are usually specified in degrees and are dependent on the length of the shorter side of the angle. For example:
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. iso 2768 angular tolerance
The ranges in the table (e.g., "Over 10 up to 50") refer to the of the angle, not the length of the hypotenuse or the longer side. The tolerance values for angular dimensions according to
You have a 45° chamfer on a 15mm long edge, with "ISO 2768-m" (Medium). Look at the row for 10–50mm. The tolerance is ± 40′ (40 minutes) . That is roughly ±0.66°. The ranges in the table (e
: This class provides tighter tolerances and is used for applications where a high degree of precision is required.
You do not need to write "ISO 2768-2" on every single angle. Just add a general note in the title block: