Originally Posted by Geek
So the rivnuts arrived
These suckers are pretty beefy!
...now just waiting for the tool to arrive.
In a pinch I have used a socket head cap screw full threaded nut and 2 washers to set them in confined spaces.
On the cap screw and spin the nut up against the head add washers and insert.
Insert in the hole holding the cap screw still wrench the nut down (gear wrench helps) compressing the insert till it is clinched.