
| 微孔规格 | 孔径公差 | 孔深公差 | |||
| 孔径(mmφ) | L/D | 高精级 | 标准级 | 高精级 | 标准级 |
| 0.075~0.100 | 2/1> | ±0.001 | ±0.0015 | ±0.010 | ±0.020 |
| 0.10~0.300 | 3/1> | ±0.001 | ±0.002 | ±0.010 | ±0.020 |
| 0.30~0.500 | 4/1> | ±0.002 | ±0.0025 | ±0.010 | ±0.020 |
| 0.50~0.800 | 10/1> | ±0.002 | ±0.003 | ±0.020 | ±0.030 |
| 0.80≦ | 20/1> | ±0.003 | ±0.005 | ±0.020 | ±0.030 |