The proven screws of the Gevag KUNST brand have been specifically developed for self-forming screwing in thermoplastics and have been used for reliable direct screwing for years. As opposed to self-tapping screws that cut the thread into the material, these self-forming screws take advantage of the ductility of the thermoplastic material, form it without cutting and solidify it in the process. The result: a particularly secure screw joint.

The screwing of these special products takes place in injected or drilled core holes, which requires only a relatively low screwing-in torque. In terms of design, our KUNST brand screws are characterised by a large thread pitch, their small core diameter and a flank angle of 30°. This ensures an optimal screwing with high pull-out strength and without damaging the material. Thanks to the small core diameter, cracking and bulging can be avoided.

Our Gevag TAP self-tapping screws according to DIN 7500 cut metric threads into steel as well as light and non-ferrous metals. Their trilobular-shaped thread makes screwing into a drilled or punched hole possible without pre-cutting a mating thread. Their thread-grooving ability ensures a chipless screwing process creating a metric ISO mating thread with relatively small effort thanks to the low screwing-in torque. This saves work processes and also ensures a backlash-free thread and therefore a very good frictional connection between the screw and the material of the component. The mating thread in the component is shaped to accept a commercially available screw, providing optimum compatibility. Gevag TAP is available in different head-shapes and thread diameters (M2 – M6) for various tool holders and individually configurable.