Aerospace series – Bolts, with MJ threads, in titanium alloys, strength class 900 MPa and 1 100 MPa – Technical specification
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2013

Aerospace – Bolts, with MJ threads, in titanium alloys, strength class 1 100 MPa – Procurement specification (ISO 9152:1998, modified)
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2011