DIN EN 3543 : 1997 Title: 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 Year: 1997 Publisher: DIN Media GmbH Availability: Within 1-2 working days