DIN EN 4163:2010 航空航天系列.镀镉合金钢长螺纹粗公差标称柄偏移十字形凹槽100°沉孔标准头螺钉.等级:1100MPa(室温)/235℃
Aerospace series - Screws 100° countersunk normal head, offset cruciform recess, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - 1100 MPa (at ambient temperature)/235 °C; German and English version EN 4163:2009