Screw anchors

Screw anchors are used to fix objects to walls where screws do not work effectively. A common type of screw anchors, which is used for plasterboard walls (drywalls), is called a drywall anchor. It is a plastic tube.

A drywall anchor    is inserted in a predrilled hole in the wall and then a screw is set in it. As the screw is screwed into the anchor, its expands inside the wall and the friction generated prevents sliding.

*drywall anchor (AmE) = wall plug (BrE)



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