Iso 2768-mh Tolerance Chart [hot]

| Shorter Side Length (mm) | Tolerance | | :--- | :--- | | Up to 10 | ±1° | | Over 10 up to 50 | ±0°30′ | | Over 50 up to 120 | ±0°20′ | | Over 120 up to 400 | ±0°10′ | | Over 400 | ±0°5′ |

The of the part (structural, moving assembly, visual prototype?) Share public link

This chart applies to standard linear dimensions such as internal sizes, external sizes, steps, diameters, and distances. Nominal Size Range (mm) Tolerance Limits (mm) Over 3 to 6 Over 6 to 30 Over 30 to 120 Over 120 to 400 Over 400 to 1000 Over 1000 to 2000 Over 2000 to 4000 2. External Radii and Chamfers (Class m - Medium)

When you see "ISO 2768-mH", the indicates that the "medium" class is applied to all linear dimensions (like lengths, widths, diameters) and angular dimensions that do not have an explicit tolerance.

You don't have to clutter your CAD exports with "±" values for every single fillet or shoulder. iso 2768-mh tolerance chart

The ISO 2768-MH tolerance chart is a specific part of the ISO 2768 standard, which defines the tolerances for medium (M) and high (H) accuracy classes. The chart provides a set of tolerance values for different feature types, including:

You might ask: Why not just tolerance every single hole and edge?

The "MH" in ISO 2768-MH refers to the specific tolerance class, which is defined as "medium" tolerance. This class provides a balance between the precision required for a part or component and the practical limitations of manufacturing processes.

Remember the golden rule: Use ISO 2768-mh for non-critical features. Reserve explicit tolerances for fits, functions, and failures. Keep a laminated copy of the chart near your CMM and another in your CAD template. When a machinist asks, "What tolerance goes here?", you can confidently reply: "Check the title block—ISO 2768-mH applies." | Shorter Side Length (mm) | Tolerance |

High tolerance class for geometrical characteristics (form and orientation) . ISO 2768-1: Linear Dimensions (Class m)

Ranges from 0.02 mm for lengths up to 10 mm, up to 0.5 mm for lengths over 1000 mm.

Limitations:

: Designers spend less time calculating non-critical tolerances. You don't have to clutter your CAD exports

: Stands for High (or strict) tolerance class for general geometrical tolerances (from ISO 2768-2). ISO 2768-1: Linear Dimensions (Class m)

These tolerances apply specifically to broken edges, rounded corners, and chamfers. Nominal Size Range (mm) Permissible Deviation (Class m) Over 3 to 6 Over 6 to 30 3. Angular Dimensions (ISO 2768-1, Class m)

What is ISO 2768? | CNC Machining Tolerance Standards - Fictiv

| Nominal Size Range (mm) | Tolerance (± mm) | | :--- | :--- | | 0.5 up to 3 | ±0.1 | | Over 3 up to 6 | ±0.1 | | Over 6 up to 30 | ±0.2 | | Over 30 up to 120 | ±0.3 | | Over 120 up to 400 | ±0.5 | | Over 400 up to 1000 | ±0.8 | | Over 1000 up to 2000 | ±1.2 | | Over 2000 up to 4000 | ±2.0 |

| Nominal Size Range (mm) | Tolerance (mm) | |------------------------|----------------| | 0.5 up to 3 | ±0.1 | | >3 up to 6 | ±0.1 | | >6 up to 30 | ±0.2 | | >30 up to 120 | ±0.3 | | >120 up to 400 | ±0.5 | | >400 up to 1000 | ±0.8 | | >1000 up to 2000 | ±1.2 | | >2000 up to 4000 | ±2.0 |