EN 4073:2016
航空航天系列-镀铬的合金钢中等长度螺纹,粗公差标准柄内六角凹槽平头螺钉-等级:1100MPa(室温)/235℃
Aerospace series - Screws@ pan head@ hexalobular recess@ coarse tolerance shank@ medium length thread@ in alloy steel@ cadmium plated - Classification: 1 100 MPa (at ambient temperature) / 235 ��