The document specifies anchor nuts to be used for connections with screws and bolts having a nominal tensile strength of 1100 MPa.
DIN 65243:2002 history
2002DIN 65243:2002-11 Aerospace - Anchor nuts with MJ thread, deep counterbore, self-locking, floating, single lug, steel; Classification: 1100 MPa/235 °C
2002DIN 65243:2002 Aerospace - Anchor nuts with MJ thread, deep counterbore, self-locking, floating, single lug, steel; Classification: 1100 MPa/235 °C