DIN EN ISO 10513-2013 公制细螺距螺纹的有效扭矩型全金属六角头螺母.8、10 和12级特性(ISO 10513-2012).德文版本EN ISO 10513-2012
Prevailing torque type all-metal hexagon high nuts with metric fine pitch thread - Property classes 8, 10 and 12 (ISO 10513:2012); German version EN ISO 10513:2012