DIN EN 4138:2010 航空航天系列.镀镉合金钢中长螺纹粗公差标称柄偏移十字形凹槽平头螺钉.等级:1100 MPa(室温)/235℃.德文版本EN 4138-2009
Aerospace series - Screws, pan head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature)/235 °C; German and English version EN 4138:2009