The "K" class specifies the baseline form and orientation limits of a part. 1. Straightness and Flatness
ISO 2768-mK acts as the unsung hero of the manufacturing floor. By bridging the gap between design intent and shop-floor reality, it ensures that parts are functional, cost-effective, and easy to produce anywhere in the world. As a general rule of thumb: use ISO 2768-mK to handle the non-critical background geometry, and focus your engineering hours on explicitly tolerancing the features that truly matter to your product's performance. general tolerance iso 2768-mk
Choosing the right class is a balancing act. While an "m" classification often provides a safe, cost-effective default, critical features still demand their own specific tolerances. By mastering the rules and tables outlined in this guide, you can harness the full potential of the ISO 2768 standard to streamline your designs, control manufacturing costs, and ensure consistent quality on every part you produce. The "K" class specifies the baseline form and
Represents the Medium accuracy class under ISO 2768 Part 1. It defines the allowable variations for lengths, radii, diameters, and angles. By bridging the gap between design intent and
Controls the variation of a surface as it rotates (standardized at 0.2 mm for class K). 4. Why Use ISO 2768-mk?
While Part 1 handles standard lengths and angles, Part 2 regulates the geometric relationships of shapes. Part 2 uses three classes: (fine), K (medium), and L (coarse).
Used for precision engineering and tight-fitting components.