螺纹底孔对 照表

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1、螺纹底孔直径公制粗牙螺纹螺纹代号钻头直径HSS硬质合金M2×0.41.61.65M3×0.52.52.55M4×0.73.33.4M5×0.84.24.3M6×1.05.05.1M8×1.256.86.9M10×1.58.58.7M12×1.7510.310.5M14×2.012.012.2M16×2.014.014.2M18×2.515.515.7M20×2.517.517.7M24×3.021.0……M30×3.526.5……M36×4.032.0……M42×4.537.5……M45×4.5

2、40.5……M48×5.043.0……细牙螺纹螺纹代号钻头直径铝硬质合金M2×0.251.751.75M3×0.352.72.7M4×0.53.53.55M5×0.54.54.55M6×0.756.36.35M8×1.077.1M8×0.757.37.35M10×1.099.1M10×1.258.88.9M10×0.759.39.35M12×1.510.510.7M12×1.2510.810.9M12×1.01111.1M14×1.512.512.7M14×1.013.013.1M16×1.51

3、4.514.7M16×1.015.015.1M18×1.516.516.7M18×1.01717.1M20×2.01818.3M20×1.518.518.7M20×1.01919.1M24×2.022.0M24×1.522.5M24×1.023.0M30×327M30×228M30×1.528.5M30×1.529M36×3.033.0M36×234.0M36×1.534.5M42×438M42×339M42×240M42×1.540.5M45×441M45×342M45×243M45×1.54

4、3.5