SPAX screws are a combination of 4CUT point, MULTIhead and patented thread serrations making them, without doubt, one of the best wood screws available. The 4CUT point bores into wood, dividing the fibres and minimising the chance of splitting. There is no longer a need to drill a pilot hole in most woods. The deep thread with patented serrations pulls the screw into the wood, significantly reducing the driving torque required (more screws per charge). The patented MULTIhead has self-countersinking and stopping qualities at the same time. Ribs on its underside cut into the wooden surface, so the head sits flush with the surface. The ribs also help prevent thread stripping when fixing hinges etc. The YELLOX coating is 6 times more resistant to corrosion than the conventional bright or yellow zinc coatings used for screws. It is a more environmentally friendly and chromium(VI) free finish. Partially threaded screws are particularly suitable for fixing wooden boards to wooden beams, for example. As the thread tightens securely into the lower piece of wood, the upper piece of wood is forced tightly against the lower piece by the screw head. Recess: 5.0mm = Pz2
