Hi,
I have a caravan which im repairing. In one section of 18 mm plywood there is a fixing in the wood (the same thickness )which has a hollow section which is threaded to take a bolt, from either side.
It looks like the bolt bit has been attatched in the wood so that it cant spin ( grippers on the outer surface ) and this leaves the threaded middle to accept a fixing.
Any idea what such a fixing is called ?
Thanks