| Standard Clearance Hole Range | Code | Metric Clearance Hole Range | Code |
| 0.062 - 0.072 | 00 | 1.6 - 1.9 | 16 |
| 0.075 - 0.085 | 01 | 2.0 - 2.3 | 20 |
| 0.088 - 0.098 | 02 | 2.5 - 2.8 | 25 |
| 0.101 - 0.111 | 03 | 3.0 - 3.3 | 30 |
| 0.114 - 0.124 | 04 | 3.5 - 3.8 | 35 |
| 0.127 - 0.137 | 05 | 4.0 - 4.3 | 40 |
| 0.140 - 0.150 | 06 | 5.1 - 5.4 | 50 |
| 0.166 - 0.176 | 08 | 6.1 - 6.4 | 60 |
| 0.192 - 0.202 | 10 | 8.3 - 8.6 | 80 |
| 0.218 - 0.228 | 12 | | |
| 0.252 - 0.262 | 25 | | |
| 0.315 - 0.325 | 31 | | |
| 0.377 - 0.387 | 38 | | |
| 0.440 - 0.450 | 42 | | |
| 0.502 - 0.512 | 50 | | |
|