Rivnut vs Plusnut

[nkemp]

Rivnuts are a great idea except when they don't work. I've generally come to hate them.

One problem I suspect many here experienced is the bolt/screw and rivnut creating a strong corrosion bond (stronger than the Rivnut to fiberglass bond) resulting in the rivnut rotating when trying to remove the bolt/screw. None-the-less, there is a need for blind nut installations.

While looking for ways to mount stuff to a recumbent trike (Catrike Road), I came across this discussion of Rivnuts Vs Plusnuts and thought I'd share: http://www.pointsunknown.com/blog/20...s-vs-plusnuts/ BTW ... since I need to install in tubes, orienting the "+" properly provides even more anti-rotation protection.

Plusnut:
Plusnut m.jpg

It seems to me that a Plusnut would be less prone to rotation

in DeLorean/fiberglass applications

given that both are properly installed and a better alternative to using Rivnuts. Looks like they would grab the fiberglass better. I could see using them with a bit of epoxy on the sides to bond to the fiberglass for even more hold. .... And then use some form of anti-seize compound on the threads.

Thoughts? Has anyone tried them?

Edit: Other names for these are jacknuts, cross nuts, cruss nut (maybe).
Edit: Another alternative for DeLorean applications is EZ Blind Nuts. These require larger hole and are like a toggle bolt.