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08-18-2022, 12:51 PM
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#1 |
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Senior Member
 
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Looking for Original Acorn Cap Nuts from Factory Round Mirrors
I'm looking for a few original acorn cap nuts which were used to attach the original 67-70 round side view mirror heads. I have my originals but they have been painted over so I'm looking for nice originals that are still the original clear zinc finish, also, not rusted or all nicked up by adjustable wrenches.
All of the nuts I've found online are smooth round (no crown) or high crown which is why I'm looking for originals. The nuts are 7/16" with 1/4"-28 (fine) threads. Here's a pic of my original (painted gold) nut and a pic I found online to show one in the condition I'm looking for. |
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08-18-2022, 02:04 PM
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#2 |
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Senior Member
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
ive seen these at ace/truevalue hardware stores
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1967custom |
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08-18-2022, 03:50 PM
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#3 |
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Senior Member
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Thanks. I'll check there too.
Still like to find some originals. |
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08-18-2022, 10:07 PM
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#4 |
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Senior Member
Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
__________________
 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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08-18-2022, 11:38 PM
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#5 | |
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Senior Member
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Quote:
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08-20-2022, 08:37 AM
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#6 |
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Registered User
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,464
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
I've got a box of mirror stuff, do you want me to go through it, should be some nuts in there
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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08-20-2022, 02:20 PM
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#7 |
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Senior Member
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Sure, if you've got some nice originals I'd be interested in them. Mine are nice (no dinged edges) but I'm trying to find unpainted ones. Thanks!
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08-21-2022, 09:28 AM
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#8 |
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Registered User
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,464
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Ok let me look, and see what I find
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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08-24-2022, 09:03 PM
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#9 |
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Senior Member
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Bump, still looking for these.
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08-26-2022, 10:56 AM
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#10 |
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Senior Member
Join Date: Jun 2000
Location: Texan in Iowa
Posts: 2,522
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
I found these a few weeks ago at Menard’s.
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Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3 |
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08-26-2022, 11:11 AM
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#11 |
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Senior Member
Join Date: Jun 2000
Location: Texan in Iowa
Posts: 2,522
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Side profile. Is this the crown you’re looking for, or is this what’s you’re calling smooth?
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Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3 |
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08-26-2022, 11:21 AM
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#12 |
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Senior Member
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
That’s what the websites I ran across were referring to as “smooth”. I’m looking for ones with an identical profile to my originals. They seem to be most often called “low crown”. There are also “high crown” versions with a taller, pointier head. Also, hoping to find them with less of a polished look.
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08-26-2022, 11:31 AM
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#13 |
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Senior Member
Join Date: Mar 2015
Location: washington
Posts: 2,216
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
I likely threw my originals out with the used up mirrors.
I understand you want identical. Will need some measurement. Like total height and depth of the hex and the hex size. If you find too shinny it's easy to dull them down in a shaker or tumbler for shells. I could make you a couple but the finish would be raw steel. Not ideal. Cheers From the mcmaster.com site. |
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08-27-2023, 01:02 AM
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#14 |
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Senior Member
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Bump
Still looking for some nice original, unpainted side mirror acorn nuts. |
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08-31-2023, 05:35 PM
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#15 |
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Senior Member
Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,140
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Re: Looking for Original Acorn Cap Nuts from Factory Round Mirrors
Found some.
1. Off a NOS 3960511 mirror (assume it's correct) 2. Modern Replacement (slightly shorter than other two but has acorn shape instead of smooth rounded top. Shoulder height looks the same as the painted one. I'd imagine GM had multiple sources for this nut over the lifecycle of these trucks) 3. Off my truck (assume it's original but painted) |
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