| Nominal Length Range | Tolerance (mm) | |----------------------|----------------| | ≤ 10 | 0.02 | | >10 – 30 | 0.05 | | >30 – 100 | 0.1 | | >100 – 300 | 0.2 | | >300 – 1000 | 0.3 | | >1000 – 3000 | 0.4 |
Micro-machined components often require tolerances tighter than , even for lengths under general tolerance iso 2768-mk
Note: For symmetry and runout (ISO 2768-2), the ‘k’ class generally allows 0.2mm for most common part sizes. | Nominal Length Range | Tolerance (mm) |
Because it is an international ISO standard, a drawing created in Germany using ISO 2768-mK can be accurately interpreted and manufactured by a machine shop in Japan or the United States without communication barriers. Limitations: When Not to Rely on ISO 2768-mK ISO 2768 Part 2 ensures that parts are
While the "m" part dictates size, the "k" part dictates form and position. ISO 2768 Part 2 ensures that parts are straight, flat, and perpendicular enough to function correctly, even if specific Geometric Dimensioning and Tolerancing (GD&T) symbols are missing from the drawing. Straightness and Flatness