打孔与攻丝标准.doc

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1、.打孔与攻丝标准M1--M10X0.83=钻孔直径;M12--M20X0.86=钻孔直径M22--M30X0.87=钻孔直径;M32--M40X0.88=钻孔直径M42--M48X0.89=钻孔直径;M50--M68X0.90=钻孔直径打得孔一般比丝锥攻丝的规格小0.3到0.5MM螺纹规格螺纹标准牙距螺纹底孔直径M2标准0.401.60细牙0.251.75M2.5标准0.452.10细牙0.352.20M2.6标准0.452.20细牙0.352.25M3标准0.502.60细牙0.352.70M3.5标

2、准0.603.00细牙0.353.20M4标准0.703.40细牙0.503.60M5标准0.804.20细牙0.504.60M6标准1.005.10细牙0.755.30M8标准1.256.80细牙11.007.10细牙20.757.30M10标准1.508.60细牙11.258.90细牙21.009.10细牙30.759.30M12标准1.7510.40细牙11.5010.60细牙21.2510.90细牙31.0011.10M14标准2.0012.20细牙11.5012.60细牙21.0013.10M

3、16标准2.0014.20细牙11.5014.60细牙21.0015.10M18标准2.5015.70细牙12.0016.20细牙21.5016.60细牙31.0017.10精选word范本！.精选word范本！