In the world of manufacturing and mechanical engineering, a technical drawing is a legal contract between the designer and the producer. But what happens when a dimension doesn't have an explicit tolerance block? Does the machinist aim for perfection? Does the inspector reject a part for being 0.1 mm too long?
Tolerance ISO 2768 MK PDF refers to a specific version of the standard, which provides a set of general tolerances for mechanical parts. The "MK" designation indicates that the standard is for medium tolerance classes, which are suitable for most general engineering applications.
This section applies to features like straightness, flatness, and perpendicularity. Nominal Length Range (mm) 100 to 300 300 to 1000 1000 to 3000 Straightness/Flatness Perpendicularity Symmetry