Spax Chipboard screws

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 screwdriver to the screw through T-STAR plus enables fast work, significantly more efficient than with any other drives. The countersunk head (or flat countersunk head) carves a recess into the wood with its polygonal underside ("pockets"), allowing it to be sunk without additional countersinking of the screw hole. The countersunk head sits flush with the surface. Unlike partial thread screws, the full thread extends along the entire length of the screw. The more thread turns 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 high-load wood connections. 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 exerted by the core in the wood and prevents splitting of the wood near the edge. The necessary torque of the cordless screwdriver is also reduced, as the screw's core does not have to "squeeze" into the wood.