General Tolerance Iso 2768-mk [work] Here

These apply strictly to the rounding or beveling of sharp edges. Nominal Dimension Range ( Tolerance Limit for Class "m" ( ±0.2plus or minus 0.2 ±0.5plus or minus 0.5 ±1.0plus or minus 1.0 3. Angular Dimensions

A factory in Germany (where it is often called DIN ISO 2768 ) and a factory in China understand the exact same limits.

Section B (using table) 6. Ø10 mm: a) m: ±0.15 → range 9.85–10.15 mm b) k: ±0.5 → range 9.5–10.5 mm 7. Length 45 mm: a) m: for 30–120 → ±0.2 → 44.8–45.2 mm b) k: for 30–120 → ±0.8 → 44.2–45.8 mm 8. Ø2.5 mm: a) m (≤3) ±0.1 → 2.4–2.6 mm b) k (≤3) ±0.3 → 2.2–2.8 mm 9. Angle 60°: m: ±1.0° → 59.0°–61.0° k: ±3.0° → 57.0°–63.0° If groove requires ±0.05 mm explicit tolerance, that explicit tolerance overrides ISO 2768 for that feature and ISO 2768 does not apply to that groove. general tolerance iso 2768-mk

The specific designation is one of the most commonly used general tolerance classes in precision machining, CNC milling, and turning. It establishes a baseline of acceptable accuracy for dimensions that do not require specialized high-precision tolerances. Breaking Down the Designation: What Does "mK" Mean?

These apply to features (flatness, straightness, perpendicularity, symmetry, runout) . These apply strictly to the rounding or beveling

Controls the variation of a surface as it rotates (standardized at 0.2 mm for class K). 4. Why Use ISO 2768-mk?

These tolerances ensure a surface or line isn't excessively curved or warped. For class , the limits are based on the length of the longest side: Length of Surface/Line (mm) Tolerance (mm) 100 to 300 300 to 1000 Information according to Engineers Edge . Other Geometrical Controls in Class K Section B (using table) 6

"Medium" tolerances align perfectly with standard workshop capabilities. Machinists can run CNC machines at optimal speeds without slowing down to chase unnecessarily tight tolerances on non-critical features.

The second letter refers to (Geometric tolerances). The classes are H, K, L .

ISO 2768 is an international standard published by the International Organization for Standardization (ISO) that specifies general tolerances for linear and angular dimensions. The standard provides a framework for defining tolerances for parts and components that do not have specific tolerance requirements mentioned elsewhere, such as in the engineering drawings or in other relevant standards.