Also known as a double cross or Pozidriv, the cross recess Z is a further development of the cross drive by the Phillips Screw Company. The difference is that the four flanks of the screwdriver blade do not taper towards the tip. This increases the lateral hold for the screwdriver bit and reduces the so-called cam-out effect. This occurs through the typical tapering on conventional cross drives, since the torque exerted by the cordless screwdriver pushes the bit upwards and out.
What this means for you: No more worrying about screwdriver bits slipping out, easier work with much less exertion. This saves a huge amount of time.
Installing window and door frames with plastic and aluminium profiles calls for a head shape that can withstand high pulling forces whilst not being too thick. Our flat countersunk head ticks both boxes. It finds its place on our SPAX-RA full-thread screw, which is used for the plug-free fastening of window and door frames. As you might expect, the T-STAR plus drive takes care of force application.
What this means for you: No more obstructive screw heads inside window and door frames.
In contrast to the partial thread, the full thread on most of our full-thread screws covers the entire – or most of – the screw length from tip to head. The more thread turn a screw has, the greater the tensile and compressive forces that can be absorbed by these screws. We make particular use of this in structural wood construction, where our full-thread screws are called upon for heavy-duty wood connections.
What this means for you: Wood connections with full-thread screws offer maximum reliability when it comes to resilience, and there's no need to use any ugly zinc-plated fittings!
While the tips of conventional screws are simply pointed, SPAX takes things to the next level yet again with the S point. The S point is characterised by serrations that stretch all the way to the front thread flanks. When you set the screw and start your cordless screwdriver, this thread immediately grips into the wood, effortlessly pulling the screw into the wood. This enables unbelievably rapid work without the risk of scratching the workpiece with slipping screw tips.
What this means for you: No more slipping on hard and smooth surfaces – you save lots of time with serial fastening since no pre-drilling is required.
Effective corrosion protection is a must for screws used for outdoor structures not exposed to the elements. For this, SPAX has developed the WIROX coating, which far outdoes conventional galvanisation in terms of both protection and durability. Our WIROX-coated screws are significantly more resistant to mechanical stress than their counterparts with chromate conversion coating. No chromium(VI) is used for WIROX, which means that even after years in an area not directly exposed to the elements, the screws are not only just as resilient, but are entirely environmentally friendly, too. Our WIROX screws are the ideal choice for all open structures without direct exposure to the elements, such as carports and pergolas. For areas with extreme weather exposure, such as decking, we continue to recommend our stainless-steel screws.
What this means for you: When you use our corrosion-protected screws outdoors, you can be safe in the knowledge that your structure is well fastened – in outdoor areas not directly exposed to the elements, WIROX keeps our screws statically rigid and reliably protected over many years. So there's no need for visual inspections every year!