great start jmb.
first time hearing about rivet nuts. any info on them.
I got a new berlingo last week. im going to ply it out in the next week hopefully
They are really cheap! The tools is the only main cost £40-100 depends on which one you buy.
Most vans have a lot of holes already in place which can be used for fixing. So it's very much like a normal rivet but just big in diameter so that it has a hole with a thread.
The tools has a threaded bar on it so you screw a rivet not onto the tools stick it into the hole in your van. You then squeeze the tool which pulls the nut from the rear folding it.
You keep going until it's tight then unscrew the tool off and your left with a fixing point.
Im using M6 because 80% of the holes in my van for these perfectly.
Just gotta make sure they are tight fitted or they can rotate and that causes a headache.
Other than that they are brilliant they look professional instead of screwing self taping screws it. If you ever remove or adapt your racking it's easier and they don't look out of place.
You also feel a lot safer using them because your less likely to cause damage to your van. Like screwing into a cable or worse!! Using a screw to large and coming through your van!!'