DIN EN 3759-1996 航空航天系列.耐蚀耐高温钢钝化螺纹接近根部带翼型十字槽平头螺钉.等级:1100MPa(室温)/425℃
Aerospace series - Screws, pan head, offset cruciform recess, threaded to head, in heat and corrosion resisting steel, passivated - Classification: 1100 MPa (at ambient temperature)/425 °C; German version EN 3759:1996