DIN EN 4131:2009 航空航天系列.铝IVD涂层耐热镍基合金普通六角头紧公差中等长度螺纹螺栓.分类:1250MPa(环境温度)/425C,德文和英文版本EN4131
Aerospace series - Bolts, normal hexagonal head, coarse tolerance normal shank, medium length thread, in heat resisting nickel base alloy, aluminium IVD coated - Classification: 1250 MPa (at ambient temperature)/425 °C; German and English version EN 4131: