DIN 65013
DIN 65013 Aerospace series - Bolts in ultra high strength steels and Ni-Co-based alloys, nominal tensile strength 1 800 MPa - Technical specification
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2013
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2013