DIN EN ISO 898-2:2012 碳素鋼和合金鋼制緊固件機(jī)械性能.第2部分:規(guī)定性能等級(jí)螺母.粗牙螺紋和細(xì)牙螺紋(ISO 898-2-2012).德文版本EN ISO 898-2-2012
Mechanical properties of fasteners made of carbon steel and alloy steel - Part 2: Nuts with specified property classes - Coarse thread and fine pitch thread (ISO 898-2:2012); German version EN ISO 898-2:2012