AN ANCHOR DEVICE OF WOODEN OR METAL STRUCTURES TO A WALL

摘要

An anchor device includes an expansion bolt and a fastening screw. The bolt has a tubular body. The tubular body further has a central shank and a head, which is integrally made with the central shank and has a full solid body on which a pair of longitudinal reciprocally perpendicular through slots are made which delimit four anchor segments adapted to spread outwards under the bias of the fastening screw. The central shank has a first portion arranged next to the head on which a plurality of longitudinal through slots define longitudinal anchoring tabs which expand radially outwards under the bias of the fastening screw following the spreading of the four anchor segments.