Iso 2768-mh Tolerance Chart Free May 2026

ISO 2768-mH Tolerance Chart: The Ultimate Guide for Engineers & Machinists

If you’ve ever looked at a mechanical drawing and seen the note “ISO 2768-mH” in the title block, you’ve likely wondered: What exactly does this allow? How much deviation is acceptable?

The "H" class defines how flat, straight, or square a part must be. Feature Type Basic Range (mm) Tolerance (mm) Flatness & Straightness over 10 to 30 over 30 to 100 Perpendicularity Symmetry Circular Run-out All ranges When to Use ISO 2768-mH iso 2768-mh tolerance chart

Angular Dimensions – Class m (Medium)

For angles without individual tolerances: ISO 2768-mH Tolerance Chart: The Ultimate Guide for

| Dimension Range for Radii/Chamfer (mm) | Tolerance Class 'm' (mm) | | :--- | :--- | | 0.5 up to 3 | ±0.2 | | >3 up to 6 | ±0.5 | | >6 up to 30 | ±1.0 | Feature Type Basic Range (mm) Tolerance (mm) Flatness

The ISO 2768-MH tolerance chart provides a set of tables that list the tolerance values for different types of dimensions, including linear dimensions, angular dimensions, and geometric tolerances.

Process: While primarily for material removal (like CNC machining), it can be applied to other processes with special examination.  ISO 2768-2

When a drawing specifies "ISO 2768-mh," it refers to two distinct parts of the standard: