Fastener for holding objects on hollow wall - has central screw and anchor expanding on screw tightening

摘要

The fastener is used to attach wall elements forming hollow walls. The fastener can accommodate heavy loads and is readily fitted. The fastener expanding anchoring part (2) has support legs (5) which are pushed outwards radially on fastening. The end plug (6) of the anchoring part has central tapped hole (7) for the fastening screw (3). Initially the composite fastener is a cylindrical part which is pushed through the hole in the wall panel. On tightening the anchoring part expands and grips the inaccessible rear side of the wall.