SCHRAUBE ZUM BEFESTIGEN VON GIPSKARTONPLATTEN

摘要

A quick-fitting screw for fastening gypsum plaster boards, mineral-fibre boards or the like on an especially metallic substructure contains a shoulder surface (10) which is at an axial distance from the end surface (4) of the screw head (1) and whose external diameter is at a radial distance from the external diameter of the screw head (1). The shoulder surface (10) is arranged on a projection (9). The shoulder surface (10) presses the material which is displaced in the board while the screw is being screwed in back into the screw hole. The screw is intended for application particularly in the case of mineral-fibre boards.