Iso 2768-mh Tolerance Chart |verified| «100% SECURE»

| Nominal Length Range in mm (approx.) | Tolerance Class "m" (± 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 | | For nominal sizes below 0.5 mm, the deviations shall be indicated adjacent to the relevant nominal size(s). |

If you are a quality engineer receiving parts with this note, follow these guidelines: iso 2768-mh tolerance chart

Do not write just "Tolerances: mH" without referencing ISO 2768. The standard implies specific rules for radii, chamfers, and how to treat zero values. | Nominal Length Range in mm (approx

The "H" class defines strict limits for form and position, such as how straight or perpendicular a feature must be. Straightness and Flatness Range of Nominal Length (mm) Tolerance (mm) Over 10 to 30 Over 30 to 100 Over 100 to 300 Over 300 to 1,000 Over 1,000 to 3,000 The "H" class defines strict limits for form

To get the most out of the ISO 2768-MH tolerance chart, follow these best practices:

A 5mm chamfer callout with no tolerance is allowed to be 4.5mm to 5.5mm. That is a massive 20% variation. If you need a cosmetic 45° x 1.5mm chamfer, you must explicitly tolerance it as max 1.6mm/ min 1.4mm.

: Allowed deviation is 0.5 mm maximum for all length ranges.