螺丝攻下孔径对照表

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螺丝攻下孔径对照表公制粗牙（M）公制牙（MF）
格下孔下孔（%） 格下孔下孔（%）
6010060100
M10.250.750.80.73M10.20.80.870.78
M1.10.250.850.940.83M1.10.20.90.970.88
M1.20.250.951.040.93M1.20.211.070.98
M1.40.31.11.211.08M1.40.21.21.271.18
M1.60.351.251.371.22M1.60.21.41.471.38
M1.70.351.351.471.32M1.80.21.61.671.58
M1.80.351.451.571.42M20.251.751.841.73
M20.41.61.741.57M2.20.251.952.071.93
M2.20.451.751.911.71M2.50.352.152.272.12
M2.30.41.92.041.87M30.352.652.772.62