DIN EN 3843-2011 航空航天系列.钝化的耐热钢制带有埋头孔的自锁双六角螺母.分类:1100 MPa(环境温度下)/650℃;德文版本和英文版本EN 3843-2010
Aerospace series - Nuts, bihexagonal, self-locking, with counterbore, in heat resisting steel, passivated - Classification: 1100 MPa (at ambient temperature) / 650 °C; German and English version EN 3843:2010