DANSK DS/EN 3303:1997
航空航天系列 螺钉 帽头 内六角 粗公差普通柄 中等长度螺纹 合金钢 镀镉 分类:1 100 MPa(环境温度)/235°C
Aerospace series - Screws, cap head, hexagon socket, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature)/235°C