Iso 2768-mh Tolerance Chart Jun 2026

By indicating "ISO 2768-mh" in the title block of a blueprint, designers eliminate the need to label every single dimension with an individual tolerance, drastically reducing drawing clutter and streamlining production [1, 3]. What Does "ISO 2768-mh" Mean?

is a combination designation used in engineering drawings to specify general tolerances for parts without individual tolerance indications. It combines two distinct parts of the ISO 2768 standard: "m" (medium precision) for linear and angular dimensions, and "H" (high precision) for geometrical features. Understanding the "mH" Designation

By writing "ISO 2768-mh" in the title block of a drawing, you automatically apply medium tolerances to standard lengths and tight geometric tolerances to the form of the part, eliminating the need to dimension every single feature manually. ISO 2768-mh Tolerance Charts iso 2768-mh tolerance chart

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

This comprehensive guide breaks down the ISO 2768-mh tolerance chart, explaining what the letters mean, providing full data tables, and showing you how to apply them to your machining projects. What Does ISO 2768-mh Mean? By indicating "ISO 2768-mh" in the title block

The "H" in "ISO 2768-mH" is one of the three tolerance classes defined in Part 2 of the standard, with H being the highest precision. These tables provide general tolerances for form and position without needing individual feature controls on the drawing. They apply to parts produced by metal removal.

These values apply to internal sizes, external sizes, steps, diameters, and radii. All values are listed in millimeters (mm). Nominal Size Range (mm) Permissible Deviation (Class m) 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 Chamfer Heights (ISO 2768-1, Class m) It combines two distinct parts of the ISO

Thus, (often written as mh ) means: