Wall-mounted nut

The wall-mounted nut comprises an annular body with a screw hole in the middle, the outer side face of the annular body is of a polygonal structure, the bottom of the annular body is provided with an extending piece horizontally extending outwards, the extending piece is provided with at least two insertion holes distributed around the annular body, detachable locking screws are inserted into the insertion holes, and the locking screws are connected with the annular body. And the surface of the extension sheet is connected with a detachable protective shell which covers the whole annular body. The extension piece extending outwards is arranged at the bottom of the annular body of the nut, the contact area between the extension piece and a wall can be increased, the secondary reinforcing and fixing effect is achieved through the locking screw, the protection shell clamped to the surface is additionally arranged on the surface of the nut, the good protection effect on the nut on the wall hanging is achieved, su