DIN EN 4073-2010
航空航天系列.镀镉合金钢中等长度螺纹粗公差标称柄六瓣凹槽平头螺钉.等级:1100 MPa(室温)/235℃.德文和英文版本EN 4073-2009
Aerospace series - Screws, pan head, six lobe recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated - Classification: 1100 MPa (at ambient temperature)/235 °C; German and English version EN 4073:2009