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PEM nuts

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Jim Berry

Joined: 10 Jan 2006
Posts: 237
Location: Denver

Posted: Fri Feb 26, 2010 11:10 am Post subject: PEM nuts

Don McDonald turned me on to PEM nuts recently, and I thought I would pass it on. These are a fixed nut that can be used in many places instead of an AN365 nut or anchor nut. They are quicker and easier to install than an anchor nut, and they work well in places where there is not room for the legs of an anchor nut. I used some on the elevator trim tab cable attach brackets., because it was a pita to attach the access covers to the bracket with AN365 nuts and there was not enough room to attach anchor nuts to the brackets. Just drill the appropriate size hole and squeeze the nut into the hole with your rivet squeezer. Available in many sizes, materials, locking & nonlocking.



Don's brother has some available at www.missileworks.com or see www.pemnet.com for a broader selection. They recommend the SL series for a locking nut in aluminum.



Jim Berry

40482

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johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Sat Feb 27, 2010 7:49 am Post subject: Re: PEM nuts

Jim,

You've got my interest, but I need to get a little more info. What I'm seeing is a nut that you can rivet. You mentioned a squeezer, but I assume you can buck these things as well. Cost less than nutplates.

John

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_________________
#40572 Phase One complete in 2011

partner14

Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas

Posted: Sat Feb 27, 2010 8:36 am Post subject: PEM nuts

John, the nuts are round and have a serration all the way around so that when you squeeze it into place , it digs into the receiving metal and is fairly permanent.  I probably should just send out some of these to everyone on the list.  I'm sure almost all would find several suitable uses for them.  Much faster and cheaper, 

 Don McDonald

  

 -- On Sat, 2/27/10, johngoodman <johngoodman(at)earthlink.net> wrote:



  	  Quote: 	
		  

From: johngoodman <johngoodman(at)earthlink.net>

Subject: Re: PEM nuts

To: rv10-list(at)matronics.com

Date: Saturday, February 27, 2010, 7:49 AM



 --> RV10-List message posted by: "johngoodman" <johngoodman(at)earthlink.net (johngoodman(at)earthlink.net)>



Jim,

You've got my interest, but I need to get a little more info. What I'm seeing is a nut that you can rivet. You mentioned a squeezer, but I assume you can buck these things as well. Cost less than nutplates.

John



--------

#40572 QB. Engine on, wing attach coming soon. Panel delivery soon.

N711JG reserved





Read this topic online here:



http://forums.matronics.com/visp; --> http://foru             - List Contribution We                              -Matt Dralle, Listm/contribution" target=_blank>http://www.matronics.com/contribution



	


         [quote][b]

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_________________
Don A. McDonald
40636

pitts_pilot(at)bellsouth.
Guest

Posted: Sat Feb 27, 2010 9:42 am Post subject: PEM nuts

I use PEM nuts for all my electronics mounting.  I like them better than 

rivnuts because the PEM nuts mount from the back of the aluminum leaving 

the front side flat, unlike the rivnuts that have that 'washer' on the 

surface.

Linn



Don McDonald wrote:

 	  Quote: 	
		   John, the nuts are round and have a serration all the way around so that 

 when you squeeze it into place , it digs into the receiving metal and is 

 fairly permanent.  I probably should just send out some of these to 

 everyone on the list.  I'm sure almost all would find several suitable 

 uses for them.  Much faster and cheaper,

 Don McDonald

  

 -- On *Sat, 2/27/10, johngoodman /<johngoodman(at)earthlink.net>/* wrote:

 

 

     From: johngoodman <johngoodman(at)earthlink.net>

     Subject: Re: PEM nuts

     To: rv10-list(at)matronics.com

     Date: Saturday, February 27, 2010, 7:49 AM

 

     

     <johngoodman(at)earthlink.net

     <http://us.mc537.mail.yahoo.com/mc/compose?to=johngoodman(at)earthlink.net>>

 

     Jim,

     You've got my interest, but I need to get a little more info. What

     I'm seeing is a nut that you can rivet. You mentioned a squeezer,

     but I assume you can buck these things as well. Cost less than

     nutplates.

     John

 

     --------

     #40572 QB. Engine on, wing attach coming soon. Panel delivery soon.

     N711JG reserved

 

 

 

 

     Read this topic online here:

 

     http://forums.matronics.com/visp; -->

     <http://forums.matronics.com/viewtopic.php?p=288489#288489>

     <http://www.matronics.com/Navigator?RV10-List>http://foru         

        - List Contribution We                             -Matt Dralle,

     Listm/contribution"

     target=_blank>http://www.matronics.com/contribution

     <http://forums.matronics.com/>

 

 

 

 

 *

 

 

 *

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Jim Berry

Joined: 10 Jan 2006
Posts: 237
Location: Denver

Posted: Sat Feb 27, 2010 11:00 am Post subject: Re: PEM nuts

John,



Don has already covered it well, but to answer your question more specifically there are no rivets involved in mounting PEM nuts. A rivet squeezer works well for setting them when the hole is close enough to an edge. In spite of Don's admonition otherwise, they can also be installed with a hammer and a hardwood block when the hole is too far from an edge to reach with your squeezer. Once a PEM nut is set, it takes a minimum of 200# of force to push it back out. So while not a secure as a riveted anchor nut, plenty strong enough for many applications, easier to install and cheaper. Try 'em and you will like 'em.



Jim Berry

40482

N15JB

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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