Aerospace series – Pan head bolts, close tolerance, with internal offset cruciform ribbed drive recess and short-length MJ thread, steel, nominal tensile strength 1 100 MPa, for temperatures up to 235 °C; Text in German and English
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2015

Aerospace; pan head bolts, close tolerance, with internal offset cruciform ribbed drive recess and short-length MJ thread, steel; nominal tensile strength 1100 MPa, for temperatures up to 235 °C
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/1993