Floorboard screws
On Mar 15, 1:35*pm, "george [dicegeorge]"
wrote:
Still havent seen a convincing reason
for the short thread at the top ofhttp://www.screwfix.com/prods/88716/
Finer pitch than the main thread, so it locks the board against the
screw head, but still allows them to be tightened down onto the joist.
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