On Jan 4, 12:39 am, "Roger Shoaf" wrote:

Riv-nuts are great for putting threads into thin sections but if I
understand the OP's project correctly, he needs to have threads in the end
so there will be nothing for the riv-nut to grab on to.

Right. As I understand it, Rivnuts are really for things like sheet
metal where you need a threaded fastener but the material is too thin
to get adequate thread engagement,