DANSK DS/EN 3305:1997
航空航天系列 螺钉 100°沉头 偏置十字槽 紧公差普通柄 短螺纹 合金钢 镀镉 等级:1 100 MPa(环境温度)/235°C
Aerospace series - Screws, 100° countersunk reduced head, offset cruciform recess, close tolerance normal shank, short thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature)/235 °C