DIN 65284

DIN 65284 Aerospace; countersunk head screws, with ribbed TORQ-SET (ACR) recess and MJ thread, fully threaded, corrosion-resisting steel, nominal tensile strength 1100 MPa, for temperatures up to 425 °C

standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/1987