Thanks - I have rivnuts but they are all circular - the chasis holes are hexagional?Rivnuts. are what you want.
You dont actually need the special tool for rivnuts but its probably better to use it. To do it without the tool put the rivnut in the hole and put a bolt with a nut on it in the rivnut (so the nut and bolthead are on the same side. Holding the bolt with a tommy bar or spanner to stop it turning (tommy bars better as its easier to keep things straight), turn the nut with a spanner so it tightens against the rivnut. Its easier with 2 people, 1 holding the tommy bar and one using the spanner Doing this bulges the rivnut out as it would with the special tool. This was how I put a new rivnut in my bulkhead for the fuel filter bracket to go on.
Thanks - I have rivnuts but they are all circular - the chasis holes are hexagional?
You could always run a drill through the holes to make them round to fit the rivnuts you have? Quicker than using a round file
Could you not use standard nut and bolt or is access too difficult? This is how it is on my series 3 but dont know how different it is on a defender