With direct screwing the fasteners generate a thread when screwed in without cutting.
The principle of non-cutting forming used here produces a thread with high load-bearing capacity due to the uninterrupted grain flow and strain-hardening of the material. Additional thread locking adhesives (e.g. to DIN 267-27/28) are therefore superfluous. The generated thread is a metric ISO thread which is compatible with standard parts. Furthermore, the threads formed in this way are backlash-free and self-locking. Thread forming screws can be used in all ductile, i.e. plastically deformable materials.