Flatness (Flat Surface) Tolerances for all Extruded Products
Surface width, W | ALLOWABLE DEVIATION FROM FLAT, D, |
Solid shapes | Hollow shapes L, (m) |
≤25 >25 In any 25 mm width | 0.1 0.0004W 0.1 | 0.15 0.006W 0.15 |
all dimesions in millimetres unless specified - tighter tolerances available on request
Total Transeverse Flatness Tolerance for Class C Hollow Shapes
Total width, W | Allowable deviation from flat,
D |
| | | ≤100 | 0.004 W |
>100 | | ≤150 | 0.005 W |
>250 | | | 0.006 W |
all dimesions in millimetres unless specified - tighter tolerances available on request