Originally Posted by learning to fly
thanks nick, thats exactly what im looking for, a big help. my worry is that they will extend through the floor in my sr and with the flodding hole will start to get the floor wet. thanks again
We have used that type of threaded insert at very close centres for fixing down the sections of aluminium floor in the Pacific (they were bonded in with epoxy to ensure they were solid and to avoid water ingress into the new plywood). However, i would not rely on them for fixing in a seat which will have a fair amount of leverage and weight on it..... refer to image which shows the sheet in place.... theres about 40 of those in that one sheet alone to make it strong enough.
The big head solution suggested is a good one, but when we looked we needed access beneath the deck (which we didn't have). As such, we had these made up (see thread here: Removeable Jockeys - How???
) and they are still working very well indeed /solid.....they are regularly used to bolt in heavy survey equipment /seats etc.
Search also 'Nashers' thread as he made some up very similar /for same sort of reason..... Deck Anchor Points.