Iso 2768 Mk !!link!!

Part 2 of ISO 2768 defines general geometrical tolerances (straightness, flatness, perpendicularity, symmetry, and runout). Here, indicates the Medium class for geometry.

[e.g., CNC Machining, Sheet Metal Fabrication] Standard Applied: ISO 2768-mK ıso 2768 mk

When a drawing references "ISO 2768-mK," it implies that any dimension or geometric feature not explicitly tagged with a specific tolerance falls under these "general" rules. This significantly de-clutters the drawing, highlighting only those features requiring precise control. Part 2 of ISO 2768 defines general geometrical

| Code | Linear Tolerance | Geometry Tolerance | Typical Use | | :--- | :--- | :--- | :--- | | | Fine | Fine | Precision instruments, tight fits | | ISO 2768-m | Medium | – (Part 1 only) | General machining | | ISO 2768-mK | Medium (m) | Medium (K) | General machining with form control | | ISO 2768-c | Coarse | Coarse | Fabrication, welding, woodworking | | ISO 2768-v | Very coarse | – | Castings, rough blanks | v (Very Coarse): Used for rough manufacturing processes

The most common standard for general engineering and CNC machining. c (Coarse): For parts where high precision is not critical. v (Very Coarse): Used for rough manufacturing processes. 2. The "K" (ISO 2768-2): Geometrical Tolerances

: Defined in ISO 2768-2 , this covers geometrical characteristics like straightness, flatness, and perpendicularity.