DIN EN 2874 : 1996 Title: Aerospace series - Bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated - Classification: 1550 MPa (at ambient temperature)/315 °C; German version EN 2874:1996 Year: 1996 Publisher: DIN Media GmbH Availability: Within 1-2 working days