How best to screw down old floorboards ?
Spax Flooring Screw ?
file:///home/george/diy-ub/Spax-Flooring-Screw-Zinc-Yellow-Passivated-4-5-X-60mm-Pack-of-300.html.mht

They have a smooth bit of shaft so the floorbaord will be pulled down
tight,
but the bit of thread at the top seems to me to spoil this effect:
either the thread there will grip and hold the board up,
or it will tear the wood, pulling the board down.
So why have a bit of thread at the top?
[g]