In mechanical engineering and manufacturing, specifying precise dimensions for every single feature on a technical drawing is highly inefficient. To streamline the design-to-manufacturing pipeline, engineers rely on general tolerance standards.
Governs linear and angular dimensions (e.g., lengths, radii, diameters, and angles). general tolerance iso 2768-mk
ISO 2768 is an international standard published by the International Organization for Standardization (ISO). It simplifies drawing indications by defining general tolerances for linear, angular, and geometrical features of parts. ISO 2768 is an international standard published by
Implementing the ISO 2768 standard is straightforward. The notation should be placed in or near the drawing's title block. The specific format indicates which parts of the standard apply. The notation should be placed in or near
What you plan to use (CNC machining, sheet metal, injection moulding?). The primary material of your component.
"Medium" tolerances match standard CNC milling, turning, and sheet metal fabrication capabilities. It prevents machinists from chasing unnecessarily tight tolerances, saving time and tooling wear.
By utilizing this dual-classification system, a single note in the drawing block eliminates hundreds of redundant tolerance callouts, drastically improving drawing readability. 2. Linear and Angular Tolerances (Class m)