Fastening element by which drilling or cutting tool can be temporarily fastened on foundation has fastening thread in form of coarse thread on second end of anchoring rod, and torque transmitting device provided on anchoring rod

摘要

The fastening element, by which a drilling or cutting tool can be temporarily fastened on a foundation, with an anchoring rod (22) with an expansion helix (30) which engages with an anchoring thread (25) and is expandable by the anchoring rod, has a fastening thread (26) in the form of a coarse thread on the second end of the anchoring rod, and a torque transmitting device (27) is provided on the anchoring rod and may be a through-hole (28) or a polygonal head.