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Rivnuts

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pdn8r(at)yahoo.com
Guest

Posted: Wed Jun 24, 2009 12:12 pm Post subject: Rivnuts

Hello all,

  

 What are the pluses - minuses of using keyed vs. keyless rivnuts.  What is the difference?

  

 I'm assuming (I know thats dangerous) that the "keyed" rivnuts simply have a protruding spot that helps in avoiding the rivnut from spinning in it's hole.



Bill Pagan 

         [quote][b]

SABorns(at)aol.com
Guest

Posted: Wed Jun 24, 2009 12:30 pm Post subject: Rivnuts

Bill,

 You are correct, the keyed rivnuts will not (hopefully) spin.

  

 Steven  Bornstein K8IDN

475 E. North Broadway

Columbus, Ohio 43214

614  263-5819

 Make your summer sizzle with fast and easy recipes for the grill.

  [quote][b]

Thruster87

Joined: 16 Apr 2008
Posts: 193
Location: Australia

Posted: Wed Jun 24, 2009 1:28 pm Post subject: Re: Rivnuts

If possible don't use rivnuts  for a couple of reason ,can be a bit tricky to install correctly.ALL types may and do spin if the protruding end of the fastener thread is corroded  and it jams onto the rivnut or you over tighten the fastener and it's easy to strip the threads as rivnuts are usually made from Al  and when they do it's a a pain to take them out as they spin around as you drill and it usually leaves a larger hole then the original rivnut. [Work with these little suckers on vintage aircraft] Don't see any evidence of stress fatigue arising out of notching the holes for the keyed type but keep in mind you do need the proper size tools especially for the notching. Cheers

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Wed Jun 24, 2009 1:34 pm Post subject: Re: Rivnuts

I was going to use Rivnuts and got some to play with and see how they worked. I have nut plates and no rivnuts in my plane.

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

pmaxpmax(at)HOTMAIL.COM
Guest

Posted: Wed Jun 24, 2009 4:58 pm Post subject: Rivnuts

After having rivnuts (not keyed) on several spots on my plane I wouldn't use them again. I even used located on them. I'm convinced that there are rivnuts that have spun and those that will. 



Phil Maxson

601XL/Corvair

---

pmaxpmax(at)HOTMAIL.COM
Guest

Posted: Wed Jun 24, 2009 5:09 pm Post subject: Rivnuts

 	  Quote: 	
		  >  I even used located on them. <<


	


Whoops!  I meant LOCKTITE on them.  Dang blackberry spill chicker. 



Phil Maxson

601XL/Corvair

pdn8r(at)yahoo.com
Guest

Posted: Wed Jun 24, 2009 5:22 pm Post subject: Rivnuts

Thanks guys, just the info I was looking for.  Looks like nutplates for me!



Bill Pagan 



--- On Wed, 6/24/09, Phil Maxson <pmaxpmax(at)HOTMAIL.COM> wrote:

 [quote]

From: Phil Maxson <pmaxpmax(at)HOTMAIL.COM>

Subject: Re: Re: Rivnuts

To: "zenith-list(at)matronics.com " <zenith-list(at)matronics.com>

Date: Wednesday, June 24, 2009, 8:56 PM



 --> Zenith-List message posted by: "Phil Maxson " <pmaxpmax(at)hotmail.com (pmaxpmax(at)hotmail.com)>



After having rivnuts (not keyed) on several spots on my plane I wouldn't use them again. I even used located on them. I'm convinced that there are rivnuts that have spun and those that will. 



Phil Maxson

601XL/Corvair

---

jaybannist(at)cs.com
Guest

Posted: Wed Jun 24, 2009 5:34 pm Post subject: Rivnuts

Bill,

 

 You should also be careful about what kind of nutplates you get.  I got some of the floating nutplate types in which the nuts are prone to spin.  That's no better than rivnuts.  If you get the floating type (which I don't recommend) make sure the nut cages are super stout. I have replaced all the spinning ones with the rigid type nutplates.

 

 Jay Bannister

 

   

 

   

 

 --

Thruster87

Joined: 16 Apr 2008
Posts: 193
Location: Australia

Posted: Wed Jun 24, 2009 9:17 pm Post subject: Re: Rivnuts

 	  jaybannist(at)cs.com wrote: 	
		  Bill,

 

 You should also be careful about what kind of nutplates you get.  I got some of the floating nutplate types in which the nuts are prone to spin.  That's no better than rivnuts.  If you get the floating type (which I don't recommend) make sure the nut cages are super stout. I have replaced all the spinning ones with the rigid type nutplates.

 

 Jay Bannister

 

   

 

   

 

 -- 	
I've put hundreds in and I've properly come across a hand full with damaged floating nuts and the main cause is cross threading /over tightening or plain old age.We spray/soak the fasteners with Ardrox or Boeshield type long term corrosion inhibitors.Keeping in mind these anchor nuts are from reputable aircraft suppliers.Cheers

z601(at)anemicaardvark.co
Guest

Posted: Thu Jun 25, 2009 5:09 am Post subject: Rivnuts

On Wednesday 24 June 2009 16:34, Gig Giacona wrote:

 	  Quote: 	
		   



 I was going to use Rivnuts and got some to play with and see how they

 worked. I have nut plates and no rivnuts in my plane.




	


I'd second this.  It is possible to get rivnuts to work, but it takes a lot of 

practice, and a lot of rivnuts get wasted in the process.  By the time one 

learns how to set a rivnut, enough rivnuts have been used that the nut plates 

would look cheap in comparison, not to mention the time involved.



I don't know how many times I've had to drill out a rivnut, and do the job 

again. Sometimes, on certificated aircraft, there is no choice, because the 

manufacturer used rivnuts. It's also the only way I've found to set a 

fastener when the back area isn't accessable, unless one is going to use 

pulled rivets.



I really feel most of us (including me) are better off with nut plates.

=============================================

                Do not archive.

=============================================

                Jim B Belcher

    BS, MS Physics, Math, Computer Science

                  A&P/IA

     Retired aerospace technical manager

=============================================

Juan Vega Jr

Joined: 13 Jan 2009
Posts: 157

Posted: Thu Jun 25, 2009 6:39 am Post subject: Rivnuts

DO NOT PUT LOCKTIGHT ON THEM!  IF THEY GET STUCK THE RIVNUT WILL UNKATCH AND YOU HAVE TO DRILL THE ENTIRE THING OUT,or hold it with plyers from the back.

Juan



--

pmaxpmax(at)HOTMAIL.COM
Guest

Posted: Thu Jun 25, 2009 2:13 pm Post subject: Rivnuts

How about if I just remove them all from my plane?  Problem solved. 



Phil Maxson

601XL/Corvair

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