The Kraftangriff Kreuzschlitz Z is an advancement of the simple cross-power drive from Philips Screw Company. The difference lies in the fact that the four sides of the screwdriver blade do not taper towards the tip. This increases the lateral grip for the bit and reduces the cam-out effect, which occurs in conventional cross-power drives due to the tapering, as the torque of the cordless screwdriver pushes the screwdriver bit upwards.

The countersunk head (or flat countersunk head) carves out a recess in the wood with its polygonal underside ("pockets") and can therefore be sunk without additional countersinking of the screw hole. The countersunk head sits flush with the surface.

In contrast to partial threads, the full thread extends over the entire length of the screw. The more threads a screw has, the greater the tensile and compressive forces that can be transferred from the screw to the wood. Our full-thread screws are primarily used for high-load wood connections.

The S-tip is characterized by the fact that the thread extends into the front flanks. When you position the screw and start the cordless screwdriver, this thread immediately grips in the wood and effortlessly pulls the screw in. This allows for quick work without the workpiece being scratched by the slipping screw tips.

With WIROX, SPAX has developed a coating that far surpasses galvanization in terms of corrosion protection. WIROX does not use chromium (VI), and the screws remain just as durable and environmentally friendly even after years in non-directly weather-exposed outdoor areas. WIROX screws are the first choice for all open structures without direct weather exposure, such as carports or pergolas. For direct weather exposure, such as on terraces, we recommend our screws in stainless steel.