Iso 20457 Tolerance Table Pdf May 2026

| Nominal Size Range (mm) | Fine (f) Tolerance (± mm) | Medium (m) Tolerance (± mm) | Coarse (c) Tolerance (± mm) | | :--- | :--- | :--- | :--- | | 0.5 up to 3 | 0.05 | 0.1 | 0.2 | | 3 up to 6 | 0.1 | 0.2 | 0.5 | | 6 up to 30 | 0.2 | 0.5 | 1.0 | | 30 up to 120 | 0.3 | 0.8 | 1.5 | | 120 up to 400 | 0.5 | 1.2 | 2.5 | | 400 up to 1000 | 0.8 | 2.0 | 4.0 | | 1000 up to 2000 | 1.2 | 3.0 | 6.0 | | 2000 up to 4000 | 2.0 | 5.0 | 10.0 |

Because ISO 20457 is a classification standard, its tables do not provide the raw numbers for every single dimension (that is the job of ISO 286, ISO 2768, etc.). Instead, it provides a . iso 20457 tolerance table pdf

If you have been searching for the you are likely looking for a clear, actionable reference for geometrical product specification (GPS) and verification. This article serves as your complete resource. We will explain what ISO 20457 is, why the tolerance table matters, how to interpret it, and where to find legitimate PDF versions. What is ISO 20457? Before diving into the table itself, it is essential to understand the scope of the standard. ISO 20457:2018 is titled "Geometrical product specifications (GPS) — Classification of tolerances for dimensional and geometrical characteristics." | Nominal Size Range (mm) | Fine (f)

Note: This table is a representative summary. The official ISO 20457 PDF contains exact values and footnotes regarding chamfers, radii, and external/internal dimensions. Angles are treated differently because the deviation is measured as a length over a given length (mm/m) or directly in degrees/minutes. This article serves as your complete resource

Using the "Medium" class for a 45mm part, the linear tolerance is ± 0.8 mm. This means your part can be 44.2 mm to 45.8 mm.

| Tolerance Class | Permissible Deviation (mm per 100mm length) | | :--- | :--- | | Fine (f) | ± 0.3 mm/m | | Medium (m) | ± 0.5 mm/m | | Coarse (c) | ± 1.0 mm/m |