DIN EN 4009 : 2006 Title: Aerospace series - Bolts, double hexagon head, close tolerance shank, medium length thread, in heat resisting nickel base alloy NI-PH2601 (Inconel 718) - Classification: 1550 MPa (at ambient temperature)/650 °C; German and English version EN 4009:2004 Year: 2006 Publisher: DIN Media GmbH Availability: Within 1-2 working days