Aerospace series - External spiral drive heads for threaded fasteners - Geometrical definition and fastener head wrenching configuration; German and English version EN 4852:2019— 29 стр.
Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out (ISO 1101:2017); German version EN ISO 1101:2017
Aerospace series - External spiral drive heads for threaded fasteners - Geometrical definition and wrenching configuration; German and English version FprEN 4852:2018
