DIN EN 2897-1996 航空航天系列.镀铬合金钢短螺纹带翼形十字槽的平头紧配合螺丝.等级:1100MPa/235℃
Aerospace series - Screws, pan head, offset cruciform recess, close tolerance normal shank, short thread, in alloy steel, cadmium plated - Classification: 1100 MPa/235 °C; German version EN 2897:1996