ISO 273
Clearance Holes
Calculates standard clearance hole diameters for metric screws, bolts, and studs in accordance with ISO 273.
Clearance Hole Diameters
Standard clearance and limit deviations for the selected bolt size
FineH12 | MediumH13 | CoarseH14 | |
|---|---|---|---|
| Nominal Ø | 8.4 mm | 9.0 mm | 10.0 mm |
| Min hole Ø | 8.400 mm EI +0 µm | 9.000 mm EI +0 µm | 10.000 mm EI +0 µm |
| Max hole Ø | 8.550 mm ES +150 µm | 9.220 mm ES +220 µm | 10.360 mm ES +360 µm |
ISO 273. Values for reference only — verify against the current standard for production use.