This standard specifies the characteristics of double hexagon head bolts with relieved shank and long thread in heat resisting steel FM-PM 38, tensile strength class 1 000 MPa at room temperature. The maximum test temperature of the material is 550 °C.
These bolts are to be used in aerospace fastening systems, of parts made in titanium, mainly stressed in tension.
PUBLISHED
EN 3323:2009
90.93
Standard confirmed
Jan 21, 2025