Iso 2768-mh Tolerance Chart

To read the chart correctly, you must break the code into its two components. They are not interchangeable, as they govern different physical properties of the part.

A 4.5 mm hole (size range 3-6 mm) has ±0.1 mm tolerance. A 6.1 mm hole (range 6-30 mm) jumps to ±0.2 mm. This discontinuity surprises many machinists. iso 2768-mh tolerance chart

The following chart lists the permissible deviations in for nominal size ranges per ISO 2768-1, class m (medium) . To read the chart correctly, you must break

A shaft length of 250 mm under ISO 2768-mh is acceptable if it measures between 249.5 mm and 250.5 mm (since 250 falls in the range >120-400, tolerance = ±0.5 mm). To read the chart correctly