内六角沉头孔尺寸mm螺纹规格通孔沉孔沉孔深M3Ø3.5Ø 6.54M4Ø4.5Ø 85M5Ø5.5Ø9.56M6Ø6.5Ø117M8Ø8.5Ø149M10Ø10.5Ø1711M12Ø12.5Ø1913M16Ø17Ø2617内六角沉头孔尺寸mm螺纹规格通孔沉孔沉孔深M3Ø3.5Ø 6.54M4Ø4.5Ø 85M5Ø5.5Ø9.56M6Ø6.5Ø117M8Ø8.5Ø149M10Ø10.5Ø1711M12Ø12.5Ø1913M16Ø17Ø26172表格详。