The SPAX typical drive T-STAR plus is a so-called internal hexagon. This shape increases the contact area 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 driver to the screw through T-STAR plus enables quick work, and it is significantly more efficient than all other drives.

The screws with partial threads are excellent for fastening thin components such as particle boards, planks, or floorboards to thicker components like beams or joists. The short thread screws into the thick component, while the unthreaded shaft remains in the attachment. This creates maximum clamping pressure between the two. The unthreaded part should be at least as thick as the attachment.

The term 4CUT refers to the square shape of the screw tip. These edges displace the wood fibers during insertion and create space for the screw's core diameter. This reduces the spreading pressure that the core exerts on the wood and prevents splitting near the edges. The necessary torque of the cordless screwdriver is also reduced, as the screw's core does not have to "squeeze" into the wood.

With WIROX, SPAX has developed a coating that is far superior to galvanization in terms of corrosion protection. WIROX does not use chromium (VI), and the screws remain just as durable after years in non-directly weather-exposed 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, such as terraces, we recommend our screws in stainless steel.