Wedge anchor
From Wikipedia, the free encyclopedia
A wedge anchor is a type of fastener used to attach a fixture to a solid base material (such as concrete). The installed end of the anchor has a conical portion around which a metal clip is fastened. When the anchor is set (usually through application of a tension load through torqing a nut) the cone pulls up through the clip and expands the clip against the side walls of the hole. This gives the anchor its resistance to tension.
Anchors are often called "toggle bolts" or "toggles."
