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12-09-2019, 02:11 PM
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Join Date: Sep 2018
Location: NSW, Australia
Posts: 156
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Pre-dimpled nutplates
I've bought dimpled nutplates, in the same sizes that Van's use in many applications. It gives me a choice, and if my memory serves me correctly it's the same part number with a "K" at the end.
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RV-9, Tail Feathers done, Wings almost done.
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12-09-2019, 03:05 PM
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Join Date: Nov 2012
Location: Ok
Posts: 94
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Dimpled nutplates
The glaring question I have to ask is
why not just get dimpled nutplates?
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12-09-2019, 03:22 PM
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Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,186
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Nut plate
I am really not sure why this is even an issue; it takes like five seconds to dimple the mounting ears on a nut plate with a hand squeezer.
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Bob
Aerospace Engineer '88
RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
EFII System 32 - Done
297 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful
Wiring...
Dues+ Paid 2019,...Thanks DR+
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12-09-2019, 03:25 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Agree . . .
Quote:
Originally Posted by rocketman1988
I am really not sure why this is even an issue; it takes like five seconds to dimple the mounting ears on a nut plate with a hand squeezer.
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Or just use NAS rivets. A flush head can install a nut plate in .025 material just fine. And much less time investment in the entire process.
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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12-09-2019, 05:23 PM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,767
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Quote:
Originally Posted by GeoffP
I've bought dimpled nutplates, in the same sizes that Van's use in many applications. It gives me a choice, and if my memory serves me correctly it's the same part number with a "K" at the end.
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IIRC the part number with the K suffix is manufactured to accept a dimple nested into the center hole - the threaded one - for use with flat head screws. The discussion here concerns dimpled ?ears?, the ones usually riveted on. |
12-09-2019, 05:29 PM
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Join Date: Jan 2005
Location: Bellevue, NE
Posts: 524
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There are dimpled nutplates available from Van?s, they are supplied in the RV-12 kits. They have a ?D? suffix (i.e. K1000-08D). Not sure what additional sizes are available, as others have said, pretty quick to just dimple standard nutplates or use NAS rivets.
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Bob
RV-10 builder x2
RV-7A under construction
EAA Tech Counselor
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12-09-2019, 06:21 PM
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Join Date: Sep 2018
Location: NSW, Australia
Posts: 156
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Quote:
Originally Posted by BobTurner
IIRC the part number with the K suffix is manufactured to accept a dimple nested into the center hole - the threaded one - for use with flat head screws. The discussion here concerns dimpled ?ears?, the ones usually riveted on.
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The part number for some of the ones I bought were MS21047L06K, and these certainly had the dimpled ears for countersunk rivets. The part description is "6-32 THREAD, SELF-LOCKING NUTPLATE, TWO LUG, LOW HEIGHT, CADMIUM PLATED CARBON STEEL, 450 DEG F, WITH DRY-FILM LUBE, COUNTERSUNK RIVET HOLES
ALT. PART NUMBER: NAS680A06K"
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RV-9, Tail Feathers done, Wings almost done.
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12-09-2019, 07:02 PM
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Join Date: Dec 2017
Location: Southern Maryland
Posts: 134
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Quote:
Originally Posted by BillL
Or just use NAS rivets. A flush head can install a nut plate in .025 material just fine. And much less time investment in the entire process.
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A seasoned builder saw a dimpled nutplate on my project and asked why in the world I would do that. Told me about NAS1097 rivets. I started using them and never looked back.
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RV-7:
Empennage complete!
Wings in progress
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12-10-2019, 07:11 AM
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Join Date: Oct 2019
Location: Belleville, MI
Posts: 236
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Quote:
Originally Posted by BillL
Or just use NAS rivets. A flush head can install a nut plate in .025 material just fine. And much less time investment in the entire process.
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Dang, looks like the RV-12 skin is only ~0.018, at least the piece I measured, which was the rudder. Steps away... Ok, got about 0.023 on the VS where the 18 nutplates were, not sure if that is 0.025 nominal?
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Bobby Steinmetz
Van Buren TWP, MI
Student Pilot, Mechanical Engineer
RV-12is Empennage Kit, Fuse Kit, #121228
N781PT Reserved
Donated 2020 
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12-10-2019, 04:09 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Quote:
Originally Posted by BobbyLucas
Dang, looks like the RV-12 skin is only ~0.018, at least the piece I measured, which was the rudder. Steps away... Ok, got about 0.023 on the VS where the 18 nutplates were, not sure if that is 0.025 nominal?
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Yes .025 as stamped on the sheets. It may work for thinner, you should try it before committing to its use.
I like the NAS as you can just countersink with the deburring tool. I do 7 rounds and it is done. YMMV as always.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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