Self tapping screws vs ??? [for grounding]

Hey guys.

On the Exocet I've had to install a bunch of grounds to the frame. I bought some specific "self tapping screws." They only appear to have a 70% success rate.

Is there a "nut-sert" style no weld solution for more cleanly installed grounding screws?

Is there a better "self tapping screw" I'm not using?

Any other input?

Thanks

I like Tek screws for grounding: http://totallynutsandbolts.com/tek_screws.html

I have one of these from HF- and they work great- http://www.harborfreight.com/hand-tools/hand-riveters/3-in-1-riveter-kit-94100.html

Even found which drill bit is barely big enough for the threaded insert- so it's nice and tight.

Weld studs on the chassis for the best answer. If you want riv-nut type application, you can get a stud type. The problem with riv-nut type installations is they have another surface to keep in contact to the chassis. Corrosion can start in a place you can't see or service...

I weld screws upside down on near-by chassis tubes and presto

stafford1500 wrote: Weld studs on the chassis for the best answer. If you want riv-nut type application, you can get a stud type. The problem with riv-nut type installations is they have another surface to keep in contact to the chassis. Corrosion can start in a place you can't see or service...

Yeah, that's what I suspected. My welder is half way across the country, but now needing to do some exhaust work and this I might just get a cheap-oh harbor freight one....

In reply to kb58:

Obvious good solution is obvious post discover, lol.

In reply to Trans_Maro:

Good option, I was using "generic" self tapping screws. I might just order some of the real deal if I don't weld in studs or nuts.

In reply to alfadriver:

Thanks for the recomendation!

I generally use 10-32 rivnuts for small grounds on my race car. I do clean off any paint where it's going and put a smear of sealant around it after. They've all been perfect for ~5 years.