螺絲攻下孔徑對照表 頁1螺絲攻下孔徑對照表稱呼尺寸下孔徑稱呼尺寸下孔徑稱呼尺寸M 1.0 X 0.250.75M 1.0 X 0.20.80NO.1 UNC64M 1.1 X 0.250.85M 1.1 X 0.20.90NO.2 UNC56M 1.2 X 0.250.95M 1.2 X 0.21.00NO.3 UNC48M 1.4 X 0.301.10M 1.4 X 0.21.20NO.4 ...
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