The SPAX typical drive T-STAR plus is a so-called internal hexagon. This shape increases the contact surface of our T-STAR plus, allowing the T-STAR plus bits to fit optimally in the screw head. The best possible power transfer from the screwdriver to the screw through T-STAR plus enables quick work, and it is significantly more efficient than all other drives.

The countersunk head (or flat countersunk head) carves a recess into 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 transmitted from the screw to the wood. Our full-thread screws are primarily used for highly stressed wood connections.

The S-tip is characterized by the fact that the thread is formed all the way to the front flanks. When you position the screw and start the cordless screwdriver, this thread immediately grips the wood and pulls the screw in effortlessly. This allows for quick work without scratching the workpiece due to the screw tips slipping.

With WIROX, SPAX has developed a coating that is far superior to galvanizing in terms of corrosion protection. WIROX does not use chromium (VI), and the screws remain just as durable after years in non-directly weathered outdoor areas, while also being environmentally friendly. WIROX screws are the first choice for all open structures without direct weather exposure, such as carports or pergolas; for direct weather exposure, like terraces, we recommend our screws in the stainless steel variant.