Iso 2768 General Tolerances Pdf May 2026

| Nominal Size Range (mm) | f (Fine) | m (Medium) | c (Coarse) | v (Very Coarse) | | :--- | :--- | :--- | :--- | :--- | | 0.5 up to 3 | ±0.05 | ±0.1 | ±0.2 | — | | >3 up to 6 | ±0.05 | ±0.1 | ±0.3 | ±0.5 | | >6 up to 30 | ±0.1 | ±0.2 | ±0.5 | ±1.0 | | >30 up to 120 | ±0.15 | ±0.3 | ±0.8 | ±1.5 | | >120 up to 400 | ±0.2 | ±0.5 | ±1.2 | ±2.5 | | >400 up to 1000 | ±0.3 | ±0.8 | ±2.0 | ±4.0 | | >1000 up to 2000 | ±0.5 | ±1.2 | ±3.0 | ±6.0 | | >2000 up to 3000 | — | ±2.0 | ±4.0 | ±8.0 |

| Range of Nominal Length (mm) | Straightness / Flatness | Perpendicularity | Symmetry / Runout | | :--- | :--- | :--- | :--- | | Up to 100 | 0.1 mm | 0.2 mm | 0.2 mm | | >100 to 300 | 0.2 mm | 0.3 mm | 0.3 mm | | >300 to 1000 | 0.3 mm | 0.4 mm | 0.4 mm | | >1000 to 3000 | 0.4 mm | 0.5 mm | 0.5 mm | You will often see a block in the title bar of a drawing stating: General Tolerances ISO 2768-mK . Iso 2768 General Tolerances Pdf

| Class | Description | Accuracy | Cost Implication | | :--- | :--- | :--- | :--- | | | Fine | High precision | Higher cost | | m | Medium | Standard workshop accuracy | Most common / Balanced | | c | Coarse | Loose tolerance | Lower cost | | v | Very coarse | Very loose | Lowest cost | | Nominal Size Range (mm) | f (Fine)