ISO 3438:2003 莫氏锥柄螺纹底孔阶梯麻花钻头

标准编号：ISO 3438:2003

中文名称：莫氏锥柄螺纹底孔阶梯麻花钻头

英文名称：Subland twist drills with Morse taper shanks for holes prior to tapping screw threads

发布日期：2003-09

标准范围

ISO 3438:2003规定了自攻螺纹前孔用莫氏锥柄小带麻花钻的尺寸。这些钻头设计用于在攻丝公制螺纹（粗螺距系列）之前在选定的M8到M30范围内钻孔。ISO 3438:2003是对ISO 2306的补充。

ISO 3438:2003 lays down the dimensions of subland twist drills with Morse taper shanks for holes prior to tapping screw threads. The drills have been designed to produce holes prior to tapping metric threads (coarse pitch series) over a selected range of M8 to M30. ISO 3438:2003 complements ISO 2306.

标准预览图