| SQUARE AND HEX LAG SCREW | |||||
| 美國規格方頭木螺釘 | |||||
| 規格 | 牙數T | 外徑（D） | 輾造徑 | ||
| MAX | MIN | MAX | MIN | ||
| NO.10 | 11 | 5.05 | 4.52 | 3.75 | 3.70 |
| 1/4 | 10 | 6.60 | 6.02 | 5.05 | 4.95 |
| 5/16 | 9 | 8.23 | 7.57 | 6.35 | 6.25 |
| 3/8 | 7 | 9.85 | 9.15 | 7.60 | 7.50 |
| 7/16 | 7 | 11.48 | 10.70 | 9.20 | 9.10 |
| 1/2 | 6 | 13.08 | 12.25 | 10.40 | 10.30 |
| 5/8 | 5 | 16.30 | 15.37 | 13.20 | 13.10 |
| 3/4 | 4 ½ | 19.50 | 18.51 | 16.10 | 16.00 |
