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  #1  
Old 01-25-2022, 05:34 PM
gotyoke gotyoke is offline
 
Join Date: Jul 2020
Location: Placerville, CA
Posts: 133
Default Minimum skin thickness for NAS1097AD3 (Oops rivets)?

I'm looking to avoid dimpling platenuts where reasonable, and know about using NAS1097AD3 (oops) rivets in slightly countersunk skin holes for that purpose. What is the minumum skin thickness that would be allowed for this?
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  #2  
Old 01-25-2022, 08:06 PM
gasman gasman is offline
 
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How thin is the skin that you are mounting a nutplate on?? The countersink Height of the rivet is 0.029 inches for -4 and .021 for -3.

Unless you want to shave the head after the rivet is installed, the skin
should be no thinner than the head.

A skin thinner than .032 would have a hard time supporting the installation
and removal of the nutplate screw.

The NAS1097AD3 will work fine in .025 skin.
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Last edited by gasman : 01-25-2022 at 10:36 PM. Reason: All corrections in bold.
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  #3  
Old 01-25-2022, 08:22 PM
BillL BillL is offline
 
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Location: Central IL
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Quote:
Originally Posted by gotyoke View Post
I'm looking to avoid dimpling platenuts where reasonable, and know about using NAS1097AD3 (oops) rivets in slightly countersunk skin holes for that purpose. What is the minumum skin thickness that would be allowed for this?
.025" still worked for me, try it on some scrap, if there is any in a 14 kit.
I must have a dozen, at least, and never an issue, even when requiring no protrusion. Confirming spec dimensions below. CS height .021"

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Last edited by BillL : 01-25-2022 at 09:25 PM.
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  #4  
Old 01-25-2022, 08:45 PM
David Z David Z is offline
 
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Location: Thunder Bay Ontario
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I countersink 0.025" for NAS1097AD3-x rivets. Cover plate screw holes, etc. There are notes in my work shop showing the head height at 0.021". This contradicts gasman above. Not sure who's right.
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  #5  
Old 01-25-2022, 09:19 PM
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PaulvS PaulvS is offline
 
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Default .025

I have installed many countersunk in .025 without any trouble and I don't expect that there is any thinner sheet used in RVs that would need to be screwed into.
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  #6  
Old 01-25-2022, 10:29 PM
gasman gasman is offline
 
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Quote:
Originally Posted by David Z View Post
I countersink 0.025" for NAS1097AD3-x rivets. Cover plate screw holes, etc. There are notes in my work shop showing the head height at 0.021". This contradicts gasman above. Not sure who's right.
Yep. I was looking at -4 spec's.... I need to pay more attention.

Another rivet that can bee used to install nutplates (when the material is thick enough) is an AN426A-3. It is soft and sets very easy, and drills out nice.
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Last edited by gasman : 01-25-2022 at 10:49 PM.
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  #7  
Old 01-25-2022, 11:03 PM
gotyoke gotyoke is offline
 
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All extremely helpful replies. Thank you!
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