Rivnut challenge

So there I was, trying to fit some M8 rivnuts into the inner wings to allow me to secure the wing liner. I bought a cheapo rivnut tool and then... found I couldn't exert enough pressure on the tool to deform the rivnuts enough to lock them

I added extra tubes to the handles, but the tool doesn't really seem up to the job...

Now I have a couple of rivnuts that freely rotate and are therefore pretty useless...

I think I might be able to get access to both sides of the rivnut, in at least one of cases, so if I put a simple nut and bolt in, will that deform the rivnut? Any other ideas?

Fitting Rivnuts without the special tool.
You need 2 nuts, 1 bolt and 1 washer that fit the thread of the rivnut. Put a clearance drill through 1 nut so that it has no thread and slides up and down the bolt.
Push the rivnut into the hole, wind the threaded nut and washer onto the bolt, then slide the drilled nut onto the bolt under them, then screw the bolt into the rivnut. It should go in far enough that the thread of the bolt is fully engaged with the thread of the rivnut. Tighten the threaded nut / washer down onto the drilled nut and wind it up tight, so that the bolt tries to pull the rivnut out of the hole, but it can't because the drilled nut is holding it in. The rivnut will then deform inside the hollow section as designed.
Loosen the threaded nut and test to see if the rivnut is tight - if not, wind it up a bit more.

Piece of ****.

is it adjustable ? mine you have to adjust (screw further in )after first press

I've also found that some rivnuts deform easier than others.

I've got m8 ones that are a nightmare to deform though that's using a nut and bolt. My m6 ones go fine with my tool

Thanks both, couple of good ideas.

Did a wider search and found this illustration of Trewey's way

Thanks

Good tip!

are ur rivnuts steel or ally..

Snifflebag said:

Thanks both, couple of good ideas.

Did a wider search and found this illustration of Trewey's way

Thanks

Click to expand...

Good site that, cheers for the find

Paulmitchell1984 said:

are ur rivnuts steel or ally..

Click to expand...

Stainless steel