Mechanical screw anchor, on concrete element

Mechanical anchor type hexagonal head screw with washer, with six-point internal star for Torx key, galvanized steel, 6x40 5, 6 mm diameter and 40 mm length, screwed directly into 6 mm diameter and 45 mm minimum depth perforation, made by hammer drill and drill bit, on cracked or non-cracked concrete element, with 20 N/mm² minimum characteristic strength and 50 N/mm² maximum characteristic strength.