DIN EN 60745-2-9-2010 手持式电动工具.安全性.第2-9部分:攻丝机的详细要求(IEC 60745-2-9-2003修订本+A1-2008).德文版本EN 60745-2-9-2009
Hand-held motor-operated electric tools - Safety - Part 2-9: Particular requirements for tappers (IEC 60745-2-9:2003, modified + A1:2008); German version EN 60745-2-9:2009