Dry-construction screw

A drywall screw for fastening a plasterboard panel to a metal support, the drywall screw having a head, a tip portion and an elongate shank, wherein the shank defines an axis in a longitudinal direction of the shank and extends along the axis from the head to the tip portion, wherein the tip portion adjoins the shank and is suitable for producing a first borehole in the plasterboard panel and a second borehole in the metal support when the drywall screw is driven through the plasterboard panel in the direction of the axis, wherein the drywall screw has a widening element which is suitable for widening the first borehole in the plasterboard panel to a first borehole diameter t and breaking off upon impinging the metal support, wherein the head has a diameter that exceeds the first borehole diameter t with a pressing-in volume V1, wherein the shank has a threaded portion, which is provided with a thread, and a thread-free underhead portion which is arranged along the axis between the threaded portion and the head and which falls below the first borehole diameter t with a receiving volume V2 which is at least 80% of the pressing-in volume V1.