NS-EN 2888:2006
航空航天系列 公制螺栓 标准六角头 粗公差标准杆 短螺纹 耐腐蚀钢 钝化 等级:600 MPa(环境温度)/425°C
Aerospace series — Metric Bolts, normal hexagon head, coarse tolerance normal shank, short thread, in corrosion resisting steel, passivated — Classification: 600 MPa (at ambient temperature)/425 °C