This standard specifies the characteristics of double hexagon headed bolts, with close tolerance shank and medium length thread, in NI-PH2601, for aerospace applications. Classification: 1550 MPa /650 °C.
DS/EN 4009:2005 history
2005DS/EN 4009:2005 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