Iso 2768 General Tolerances Pdf Jun 2026

Used for precision machining and high-end components.

Speeds up the design and manufacturing workflow by providing a "default" accuracy level. Cost-Effective:

| Tolerance Class | H | K | L | | :--- | :--- | :--- | :--- | | Circular Run-out | 0.1 | 0.2 | 0.5 | Source: ISO 2768-2 Iso 2768 General Tolerances Pdf

For engineers, quality control inspectors, and CNC machinists, the phrase is one of the most frequently searched technical documents. It represents the gold standard for default, or "general," tolerances on linear dimensions, angles, radii, and chamfers when no individual tolerance is specified on a drawing.

The tolerance classes for geometry are designated by letters: Used for precision machining and high-end components

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| Nominal Size Range (mm) | Fine (f) | Medium (m) | Coarse (c) | Very Coarse (v) | | :--- | :--- | :--- | :--- | :--- | | 0.5 up to 3 | ±0.05 | ±0.1 | ±0.2 | ±0.5 | | over 3 up to 6 | ±0.05 | ±0.1 | ±0.3 | ±1 | | over 6 up to 30 | ±0.1 | ±0.2 | ±0.5 | ±1 | | over 30 up to 120 | ±0.15 | ±0.3 | ±0.8 | ±1.5 | | over 120 up to 400 | ±0.2 | ±0.5 | ±1.2 | ±2.5 | | over 400 up to 1000 | ±0.3 | ±0.8 | ±2 | ±4 | | over 1000 up to 2000 | ±0.5 | ±1.2 | ±3 | ±6 | | over 2000 up to 4000 | — | ±2 | ±4 | ±8 | It represents the gold standard for default, or

: Dictates the "Medium" class for linear and angular dimensions (Part 1).