METHOD FOR ANCHORING A FASTENING ELEMENT IN A MINERAL COMPONENT, AND FASTENING ELEMENT FOR MINERAL COMPONENTS

摘要

A method is described for anchoring a fastening element (11) in a mineralcomponent (1), in which abore hole (2) is provided in the component (1) using a drill bit having anominal drill bit diameter,and a fastening element (11) is then screwed into the provided bore hole (2).The fastening element(11) has a shank (12) which is provided with rotary engagement device (16) fora setting tool, andhas a core diameter (K) and cutting edges (21) on a first end region. Thefastening element has aself-tapping thread (17) in which the difference between the outer diameter ofthe thread (17) and the corediameter (K) of the shank (12) corresponds to 0.05 to 0.7 times the pitch ofthe thread (17). A drill bitis used which has a nominal drill bit diameter corresponding to 0.95 to 1.10tiines the core diameter(K) of the shank (12). Also described is a fastening element (11) foranchoring in a mineralcomponent (1).