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The question, initially posted May 23, 2005, was:
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Rivnuts for mirror mounts?
#1425988 Wed Oct 06 2021 01:32 AM
Joined: Jan 2019
Posts: 316
F
'Bolter
The holes for the mirror mount on one of my doors are stripped out and the holes on the other door are getting close.

Is there a good reason not to just put rivnuts in the stock holes and use machine screws with the appropriate head to reattach them? Welding the stripped holes shut and redrilling them is the more traditional solution, but I am wondering if it is the best one.


58 Apache, long bed fleetside, V8 w/SM420
Drivable but the rear axle needs work.
Re: Rivnuts for mirror mounts?
Fibonachu #1426003 Wed Oct 06 2021 03:59 AM
Joined: Jul 2000
Posts: 1,452
G
Insomniac
My 1980 Chevy truck came with the "extendable camper mirrors". They were attached to the door with some sort of rivnuts and stainless steel bolts.

I had a problem with them. When I wanted to remove the mirrors, I found some of the bolts frozen in their rivnuts and the rivnuts spun in the door skin when I tried to remove them.


Gord
----
1954 1/2 ton 235 4 speed
Re: Rivnuts for mirror mounts?
Fibonachu #1426042 Wed Oct 06 2021 03:08 PM
Joined: May 2015
Posts: 5,333
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Based on Gord’s experience I’d put rivnuts in and then tack weld them or just use weld nuts. The ones on Gord’s truck were probably just crimped in. Anti seize on the screws, too.


Kevin
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
#2 - '29 Ford pickup restored from the ground up.
First car '29 Ford Special Coupe
Busting rust since the mid-60's
Re: Rivnuts for mirror mounts?
Fibonachu #1426054 Wed Oct 06 2021 04:37 PM
Joined: Oct 2005
Posts: 3,520
"Hey! I sound like Darth Vader!!
They do make a serrated rivnut that has a bit more grip.

Attached Files
rivnut.jpg (34 KB, 84 downloads)
Re: Rivnuts for mirror mounts?
Fibonachu #1436199 Wed Jan 05 2022 09:45 PM
Joined: Jul 2011
Posts: 738
M
'Bolter
The other option in addition to using the rivnuts shown above, on sheet metal such as your door skin I will use a flat washer on the back side when setting the rivnut to help spread the load out ..

Re: Rivnuts for mirror mounts?
Fibonachu #1436203 Wed Jan 05 2022 10:32 PM
Joined: Sep 2010
Posts: 1,349
K
'Bolter
I think these are the ones Gord And Fran were talking about may be okay if you put never seize

Attached Files

kevinski 1954 GMC 9300 Welcome to the virtual Garage [stovebolt.com]
Re: Rivnuts for mirror mounts?
Fibonachu #1436206 Wed Jan 05 2022 10:39 PM
Joined: May 2005
Posts: 8,756
B
Sir Searchalot
The proper way is to make a nut plate. Like the 67-69 trucks use. Use the gasket as a template for 1/8 thick steel with three nuts welded to it. Hold it up in there while installing mirror.
or just reach in and hold a separate nut for each screw.
Don't be drilling extra holes.

I don't feel that is an application for a rivnut.


Watch out for careful drivers!!!
I'm away on an ego trip. Will be back on Feb 30.
I'm not an Auto Mechanic, but I play one on TV.
I charge $0.02 for every opinion and I take Paypal.
Plan B is always better than plan A, by definition.
I recommend invoking MIL-T-FP41c when machining and fabricating
I used to think beer was bad for me, so I gave up thinking.
Sometimes no nonsense makes sense, in a sense.
You can't teach a new dog old tricks.
Honk if you're Amish


Re: Rivnuts for mirror mounts?
Fibonachu #1436216 Wed Jan 05 2022 11:44 PM
Joined: Jan 2019
Posts: 316
F
'Bolter
Bartamos. A nut plate is a good idea. The door is not flat there, but with a rubber gasket similar to what is on the outside it should be close enough.

Thanks, I should have thought of that.


58 Apache, long bed fleetside, V8 w/SM420
Drivable but the rear axle needs work.
Re: Rivnuts for mirror mounts?
Fibonachu #1436223 Thu Jan 06 2022 01:09 AM
Joined: May 2005
Posts: 8,756
B
Sir Searchalot
Individual nuts with backing washer would be the easiest. Depending on access. If you can slightly curve the plate to get the proper screw angles, you can thread the plate. Depending on screw size. I don't remember the size. 1/4-20 would take a 3/16 min thick plate.


Watch out for careful drivers!!!
I'm away on an ego trip. Will be back on Feb 30.
I'm not an Auto Mechanic, but I play one on TV.
I charge $0.02 for every opinion and I take Paypal.
Plan B is always better than plan A, by definition.
I recommend invoking MIL-T-FP41c when machining and fabricating
I used to think beer was bad for me, so I gave up thinking.
Sometimes no nonsense makes sense, in a sense.
You can't teach a new dog old tricks.
Honk if you're Amish



Moderated by  48bigtrucks 

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