General Tolerance Iso 2768-mk Jun 2026

Inspection teams know exactly which general limits to check using standard Go/No-Go gauges or Coordinate Measuring Machines (CMMs).

While powerful, ISO 2768 is not a blanket solution for every feature. It should not be applied to:

If you want to tailor this standard to your specific project, tell me: general tolerance iso 2768-mk

| Aspect | Impact | |--------|--------| | | Lower than tighter classes (e.g., -f), but higher than -c (coarse). | | Inspection | Simple – can be checked with calipers, height gauges, squares. | | Suitable processes | CNC milling, turning, sheet metal bending, 3D printing (with care). | | Not suitable for | High-precision fits (H7/g6), bearing housings, mating parts with clearance <0.05 mm. |

For class "k", the general circular run-out error must not exceed . Inspection teams know exactly which general limits to

, specifically for features like straightness, flatness, perpendicularity, and symmetry. 1. ISO 2768-1: Linear & Angular Dimensions (Class 'm')

| Shorter side length range | Tolerance (mm) | |----------------------------|----------------| | ≤ 100 | 0.2 | | >100 – 300 | 0.3 | | >300 – 1000 | 0.4 | | >1000 – 3000 | 0.5 | | | Inspection | Simple – can be

An individual tolerance indicated on a specific dimension always takes precedence over the general tolerance. Furthermore, general tolerances do not apply to reference dimensions, auxiliary dimensions, or dimensions already covered by other standards.

These apply to internal sizes, external sizes, steps, diameters, and distances. Nominal Dimension Range ( Tolerance Limit for Class "m" ( ±0.1plus or minus 0.1 ±0.1plus or minus 0.1 ±0.2plus or minus 0.2 ±0.3plus or minus 0.3 ±0.5plus or minus 0.5 ±0.8plus or minus 0.8 ±1.2plus or minus 1.2 ±2.0plus or minus 2.0 2. Broken Edges (External Radii and Chamfer Heights)

It ensures that a machine shop in one country interprets "no tolerance" the same way as a shop in another. Part 1: Dimensional Tolerances (The "m")

Tolerances for angles also depend on the length of the shorter leg (e.g., ± 30' for lengths up to 10mm). Broken Edges: