Ground serrations

The advantage of a thread with a ground serrations compared to a conventional thread is that it can cut through the fibres of the wood more easily. This works in a similar manner to a serrated knife, which offers the same advantages when cutting a tomato, for example. The ground serrations on the thread of the SPAX, in combination with the SPAX 4CUT point, make it possible to dispense with pre-drilling (depending on the wood).