DIN EN 3543-1997 航空航天系列.钝化耐蚀耐高温钢短螺纹带翼形十字槽100度沉头紧配合螺丝.等级:1100MPa/425℃
Aerospace series - Screws, 100° countersunk normal head, offset cruciform recess, close tolerance shank, short thread, in heat and corrosion resisting steel, passivated; classification: 1100 MPa (at ambient temperature)/425 °C; German version EN 3543:1997