This might be something else you could try. Block of wood, counterbored so the serrations can go all the way to the top, and a concrete/masonary nail. The serrations project away from the nutsert which would help hold it in place for a bolt/washer tighten or put a little JB Weld on it and try it 24 hrs. later. The grooves would help the JB Weld.
Bill
I KNEW he had one of those, he HAD to have one of those. FER Pete's sake, he's got every damn thing else any of us ever needed to fix anything . I makes me EMERALD GREEN(6M1 ) with envy every dang time.
Bill, thanks for the pics and ideas. I had already evolved to drastic measures by Saturday morning. Got a nice thin SAE-type washer with ID same as rivnut, scored surface of washer and rivnut with file, soldered them together, liberally coated shoulder of rivnut and surface of washer with JB weld, smacked that all in the hole, let it sit until Sunday morning, then used the two spanners and short bolt method and it worked like a charm. I'm hoping the excess gob of JB weld just gives me a little bit more insurance. I measured the workable gap on the PS side between the body channel and frame cross member and it was just barely 1". Tricky to get a bolt that would fit in there and still get enough threads on the rivnut to start pulling it down. All in all glad to be done with it and get on to the fun part of plumbing in the tank. Thanks again to everyone for the assistance and hopefully somone else got some "technical" info on future rivnut installs
My, this was dragged out from the back of the closet...
I guess to include pertinent content, my nutserts that were installed using a home-brewed bolt/washers/nut/spanner have held up entirely without issue. this is with plenty of high speed washboard, jarring, bumping and a leisurely drive from SoCal to WVA and back with a side trip through Moab. Nutserts are great for what they were designed to do.
Mike
My, this was dragged out from the back of the closet...
I guess to include pertinent content, my nutserts that were installed using a home-brewed bolt/washers/nut/spanner have held up entirely without issue. this is with plenty of high speed washboard, jarring, bumping and a leisurely drive from SoCal to WVA and back with a side trip through Moab. Nutserts are great for what they were designed to do.
Mike