GD&T Tolerance Lookup (ISO 2768 / GB/T 1184)
Enter dimension to find general straightness, flatness, roundness, and cylindricity tolerances.
Straightness / Flatness (μm)
| Range | Gr.1 Ra | Gr.1 Tol | Gr.2 Ra | Gr.2 Tol | Gr.3 Ra | Gr.3 Tol | Gr.4 Ra | Gr.4 Tol | Gr.5 Ra | Gr.5 Tol |
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Roundness / Cylindricity (μm)
| Range | Gr.0 | Gr.1 | Gr.2 | Gr.3 | Gr.4 | Gr.5 | Gr.6 | Gr.7 | Gr.8 | Gr.9 |
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