DIN EN 4120 : 2006 Title: Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH1302 (Waspaloy), silver plated on thread - Classification: 1210 MPa (at ambient temperature)/730 °C; German and English version EN 4120:2004 Year: 2006 Publisher: DIN Media GmbH Availability: Within 1-2 working days