BS EN 3543:1997
钝化耐热及耐腐蚀钢制短螺纹紧公差标准柄翼型十字槽100°标准埋头螺钉.等级:1100 MPa(室温)/425℃
Screws, 100 ° countersunk normal head, offset cruciform recess, close tolerance normal shank, short thread, in heat and corrosion resisting steel, passivated - Classification: 1100 MPa (at ambient temperature)/425 °C