Fastening unit consists of plastic straddling dowel and fastening screw made of plastic, whereby plastic screw has screw thread or nail thread and runs out continuously into point or thread-free point

摘要

The fastening unit consists of a plastic straddling dowel and a fastening screw made of plastic. The plastic screw has a screw thread or nail thread and runs out continuously into a point or thread-free point. The plastic screw may have a cross slot, slot, hexagon socket or nail head. A thickened section is injected below the screw head. The plastic screw and plastic dowel form a unit and are always used together.