DIN EN 3301 : 2008 Title: Aerospace series - Bolts, T-head, close tolerance, medium thread length, in heat resisting steel FE-PM1708 (FV535), uncoated - Classification: 1000 MPa/550 °C; German and English version EN 3301:2007 Year: 2008 Publisher: DIN Media GmbH Availability: Within 1-2 working days