General Tolerance Iso 2768-mk !new! Page

In engineering design, ISO 2768-mK is a standard general tolerance callout used on technical drawings to simplify the dimensioning process. It ensures that any feature without a specific tolerance automatically adheres to a "medium" level of precision for linear dimensions and a "refined" level for geometric characteristics. What "mK" Means

6. Summary Table Example

Imagine a shaft with a nominal diameter of 50 mm and a length of 200 mm.

ISO 2768-mK is an international standard that defines general tolerances for machining processes, such as CNC machining. It is typically indicated in the drawing's title block as "General Tolerance: ISO 2768-mK". general tolerance iso 2768-mk

Note: For dimensions below 0.5 mm, the tolerance shall be stated explicitly on the drawing.

GENERAL TOLERANCES: ISO 2768-mk

4. Tolerance Tables (Extract)

4.1 Linear Dimensions (ISO 2768-1 – Class "m")

Applicable to external radii, chamfer heights, and linear sizes (lengths, widths, diameters).

The tolerance values for ISO 2768-MK vary depending on the tolerance grade and the nominal dimension. Here are some examples of tolerance values for each grade: In engineering design, ISO 2768-mK is a standard

Symmetry: Ensures features are centered correctly (e.g., 0.6 mm for lengths up to 300 mm).

It is divided into two parts: