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公制螺纹钻底孔用钻头直径尺寸表
公制螺纹钻底孔用钻头直径尺寸表
M1:粗扣螺距=Φ 细扣螺距=Φ
M2:粗扣螺距=Φ 细扣螺距=Φ
M3:粗扣螺距=Φ 细扣螺距=Φ
M4:粗扣螺距=Φ 细扣螺距=Φ
M5:粗扣螺距=Φ 细扣螺距=Φ
M6:粗扣螺距=Φ 细扣螺距=Φ
M8:粗扣螺距=Φ 细扣螺距 , =Φ7,Φ
M10:粗扣螺距=Φ 细扣螺距 , , =Φ,Φ9,Φ
M12:粗扣螺距=Φ 细扣螺距 , , =Φ,Φ,Φ11
M14:粗扣螺距=Φ 细扣螺距 , , =Φ,Φ,Φ13
M16:粗扣螺距=Φ14 细扣螺距 , =Φ,Φ15
M18:粗扣螺距=Φ 细扣螺距 , ,=Φ,Φ,Φ17
M20:粗扣螺距=Φ 细扣螺距 , , =Φ,Φ,Φ19
M22:粗扣螺距=Φ 细扣螺距 , , =Φ,Φ,Φ21
M24:粗扣螺距=Φ 细扣螺距 , , =Φ,Φ,Φ23
生产中钻螺纹底孔公式:
t<1mm: Dz=d-t
t>1mm: Dz=d-~t
式中 t 螺距(毫米)
Dz 攻丝前钻头直径(毫米)
d 螺纹公称直径(毫米)
公制螺纹钻底孔用钻头直径尺寸表
公称直径d 螺距t 钻头直径 公称直径d 螺距t 公称直径d
M1 粗 = M2 粗 =
细 = 细 =
M3 粗 = M4 粗 =
细 = 细 =
M5 粗 = M6 粗 =
细 = 细 =
M8 粗 = M10 粗 =
细 = 细 =
细 = 细 =
细 =
M12 粗 = M14 粗 =
细 = 细 =
细 = 细 =
细 = 细 =
M16 粗 = M18 粗 =
细 = 细 =
细 = 细 =
细 =
M20 粗 = M22 粗 =
细 = 细 =
细 = 细 =
细 = 细 =
M24 粗 =
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