？ 短柄螺母絲錐攻牙鉆孔徑
Drill Hole Size and Tolerance Selection (螺母攻牙鉆孔徑及選定)
依據螺母螺紋等級選定螺母絲錐之
Drill Hole Size and Tolerance Selection (螺母攻牙鉆孔徑及選定)
依據螺母螺紋等級選定螺母絲錐之
其他說明
| 規格 | 總長 | 刃長 |
| Size | Overall Length | Thread Length |
| M2.5x0.45 | 50 | 15 |
| M2.6x0.45 | 50 | 15 |
| M3x0.5 | 55 | 20 |
| M3.5x0.6 | 55 | 20 |
| M4x0.7 | 60 | 25 |
| M4.5x0.75 | 60 | 25 |
| M5x0.8 | 70 | 30 |
| M6x1 | 75 | 35 |
| M7x1 | 75 | 35 |
| M8x1.25 | 85 | 40 |
| M9x1.25 | 90 | 45 |
| M10x1.5 | 100 | 50 |
| M11x1.5 | 110 | 55 |
| M12x1.75 | 115 | 60 |
| M14x2 | 125 | 65 |
| M16x2 | 135 | 70 |
| M18x2.5 | 145 | 80 |
| M20x2.5 | 155 | 85 |
| M22x2.5 | 165 | 90 |
| M24x3 | 175 | 100 |
| M27x3 | 190 | 110 |
| M30x3.5 | 210 |
120 |
