Remform screws from Arnold Umformtechnik GmbH & Co. can contribute to reduce the overall assembly cost of plastic parts. The main application are plastic parts assemblies in the automotive industry. In contrast to other joining methods for plastic components, direct assembly with Remform screws does not require nuts or inserts to hold the components together. The screws form their own threads and the necessary core hole in the plastic component concerned. This automatically eliminates the need for cost-intensive processes involved in joint preparation.
The asymmetrical thread geometry of the Remform design steers the resulting forces during the threading process in the desired direction. To improve material flow, the thread flank facing away from the head of the screw is radiused. The steep thread flank facing the head of the screw accommodates the displaced plastic and increases the thread flank overlap, which ensures high breakaway force for tension as well as torque. The large difference between the forming torque and the stripping torque provides an extra margin of safety, which is reflected in screws that are always fully tightened.
Screws for plastic components assemblies (photo: Arnold Umformtechnik)
