| WOOD SCREW ASA TYPE | |||||
| 美國規格木螺絲 | |||||
| 規格 | 牙數T | 外徑（D） | 輾造徑 | ||
| MAX | MIN | MAX | MIN | ||
| NO.0 | 32 | 1.62 | 1.34 | 1.20 | 1.15 |
| NO.1 | 28 | 1.95 | 1.67 | 1.50 | 1.45 |
| NO.2 | 26 | 2.28 | 2.00 | 1.70 | 1.65 |
| NO.3 | 24 | 2.61 | 2.33 | 2.00 | 1.95 |
| NO.4 | 22 | 2.94 | 2.66 | 2.25 | 2.20 |
| NO.5 | 20 | 3.27 | 2.99 | 2.55 | 2.50 |
| NO.6 | 18 | 3.60 | 3.32 | 2.80 | 2.75 |
| NO.7 | 16 | 3.93 | 3.65 | 3.10 | 3.05 |
| NO.8 | 15 | 4.26 | 3.98 | 3.35 | 3.30 |
| NO.9 | 14 | 4.59 | 4.31 | 3.45 | 3.40 |
| NO.10 | 13 | 4.92 | 4.64 | 3.85 | 3.80 |
| NO.12 | 11 | 5.58 | 5.30 | 4.35 | 4.30 |
| NO.14 | 10 | 6.24 | 5.97 | 4.85 | 4.80 |
| NO.16 | 9 | 6.90 | 6.63 | 5.20 | 5.15 |
| NO.18 | 8 | 7.57 | 7.29 | 5.75 | 5.70 |
| NO.20 | 8 | 8.22 | 7.59 | 6.40 | 6.35 |
| NO.24 | 7 | 9.55 | 9.27 | 7.50 | 7.40 |
