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Grimly Curmudgeon[_3_] Grimly Curmudgeon[_3_] is offline
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Default DIY Concrete screws

In my local supplier, they have concrete screws...
http://deckrepairhq.com/wp-content/u...ws-150x130.jpg
At three quid a pop.
No wucking fay, am I paying that for a fecking bolt, especially if I
want 12 or more.
I recall a couple of years ago, the same supplier didn't have concrete
bolts, but had these...
http://www.china-tiantian.com/upload...9211551460.jpg
And I'd used a couple of them to see if they bolted into concrete well
enough. They did, so I repeated the experiment today and drove one of
the 3quid screws into its 12mm hole (quite easy) and drove one of the
coach screws into its 10mm hole (a lot tougher) and it held ok.
A pneumatic impact hammer was needed for both, though.

The difference in price? The coach screws are less than a quid each.