DIN EN 4137 : 2009 Title: Aerospace series - Bolts, normal bi-hexagonal head, stepped shank, long thread, in titanium alloy, anodized, MoS<(Index)2> lubricated - Classification: 1100 MPa (at ambient temperature)/315 °C; German and English version EN 4137:2009 Year: 2009 Publisher: DIN Media GmbH Availability: Within 1-2 working days