When it comes to very high screwing-in torques, such as with the use of our SPAX threaded rods, standard drives become overwhelmed. The only thing for it is a hex head – which, at SPAX, is only used on threaded rods. Thanks to its size and shape, it enables the strong forces required during insertion to be transferred from the spanner or nut to the threaded rod and convert them directly into drive. The collar on the lower part of the head guarantees a firm hold for the tool by preventing slipping.
What this means for you: Even thick and long threaded rods can be inserted with minimal effort and no annoying tool slips.
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!