Unknown fixing for a table

[Trig81]

Hi everyone, got a bit of a problem, need to put a table back in at work but I'm unsure of the fixings required. The floor seems to be hollow with some kind of structural boards then tiled over. The tables are fastened down with hex/tap bolts but I can't find any sort of cavity fixings like that.
Any help is much appreciated, thanks!

 

[PrenticeBoyofDerry]

A better picture would be of one that has been removed. Best suggestion is take one out, I assume you have at least one to remove? And take it to a local iron mongers and ask them for a similar fixing.

 

[Trig81]

The ones that are in there are broken and have fallen to the bottom of the cavity. I'm not taking another table off incase the same thing happens. Pic was just for reference of the type of base on the table really. Proper scratching my napper here haha been searching fixings on Google for hours lol

 

[PrenticeBoyofDerry]

You will need to know the type of thread that is on the fixing, without knowing that it would be difficult to match up.

 

[Trig81]

Not too sure tbh, think they're like m10 or m12. Don't think I need an exact match, just looking for suggestions of hollow wall type fixings that come with this type of bolt (not those little skinny m5 or similar machine screws) that would be sufficient to keep a table anchored down properly

 

[PrenticeBoyofDerry]

http://www.screwfix.com/p/easyfix-bright-zinc-plated-set-screws-m10-x-50mm-50-pack/11372

http://www.screwfix.com/p/easyfix-set-screws-a2-stainless-steel-m12-x-50mm-10-pack/5504t

 

[Burnerman]

Have a look at sleeve anchors or similar.....if the guts have fallen into a void you'll need new stuff anyway. I remember using a product called hollo-bolt or something but it was a good while ago.
John

 

[Trig81]

Ooh those hollo bolts might be exactly what I need, thank you very much for that!!

 

[PrenticeBoyofDerry]

So you are after the whole fixing bolt and sleeve.
Look for hollow cavity bolts/hollow floor anchors then.