Posted to News on 6th Apr 2007, 00:00
Automotive applications for thread-forming fastening
Working jointly with Magna Powertrain AG, Arnold Umformtechnik has carried out a comprehensive study aimed at measuring the requirements of thread-forming screws combined with aluminium alloys. The world's leading manufacturer of distributor gear units has proved the capability of this screw profile in the form of Arnold's cost-busting Taptite 2000 when used in light-metal gear housings.
The results of the study confirm the trend that thread-forming versions will soon be strong challengers to their metric equivalents. The comprehensive screw-in tests demonstrably indicate a relatively even pre-tensioning force window for both initial and repeat screw fastenings. Even at maximum core hole tolerance the method achieves acceptable breakaway moments.
