Iso 2768 Fk !exclusive! May 2026
Why is this important? Not every dimension on a drawing needs a specific tolerance block. For features where standard workshop accuracy is sufficient, ISO 2768-FK saves time, reduces costs, and keeps drawings clean. What is ISO 2768? ISO 2768 is the international standard for general tolerances for linear and angular dimensions without individual tolerance indications.
#ISO2768 #GDandT #MechanicalEngineering #Machining #EngineeringDrawings #QualityControl iso 2768 fk
| Characteristic | Tolerance per 100mm | | :--- | :--- | | Straightness & Flatness | 0.1 mm | | Perpendicularity | 0.2 mm | | Symmetry | 0.5 mm | | Runout | 0.1 mm | Why is this important
| Code | Meaning | Application | | :--- | :--- | :--- | | | Fine (Linear tolerance class) | For dimensions like lengths, steps, diameters, radii, chamfers. | | K | Medium (Geometric tolerance class) | For form & position (straightness, flatness, perpendicularity, symmetry, runout). | Note: The full standard also includes "m" (Medium) and "c" (Coarse) for linear, and "L" (Coarse) for geometric. Key Tolerances for ISO 2768-FK (Metric, mm) Part 1 – Linear Dimensions (Class "F" - Fine) What is ISO 2768
| Dimension Range | Tolerance (± mm) | | :--- | :--- | | 0.5 up to 3 | 0.05 | | >3 up to 6 | 0.05 | | >6 up to 30 | 0.10 | | >30 up to 120 | 0.15 | | >120 up to 400 | 0.20 | | >400 up to 1000 | 0.30 |