Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
05-14-2025, 11:38 PM
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Nos lug nuts
What wheels do these GM lug nuts go on
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#2
05-15-2025, 01:42 AM
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The web shows:
5.813 Mag Rally Sport SS Wheel Capped Lug Nuts GM # 414188 Replaces9780732, 9789086, 399683, 1231722. THISIS LISTED FOR THE FOLLOWING APPLICATIONS: 1969-79 Chevy Olds Pontiac Rally wheel
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#3
05-15-2025, 03:35 AM
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If the 1st design 414188 with HIGH CROWN was ever reproduced , and the price
was say $100 / set of twenty.....any opinion on how many owners of 69-70 High Quality cars would buy , besides myself ??????
__________________
Chuck Sharin [email protected] Auburn,WA (30 miles South of Seattle) 70 Camaro R/S Z-28, L-78, R/S SS 69 Camaro COPO "recreation"
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olredalert (05-15-2025) | ||
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#4
05-15-2025, 04:57 AM
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I’m sure I speak for a lot of people when I express my own undying hatred towards those “capped” lug nuts. My father hated them too & it’s mind-boggling to see what NO$ sets bring. I am a Machinist by trade & I tend to make my own lug nuts when I don’t like current offerings for my rare Magnesium wheels. Anyway, how cool would it be to manufacture a 1-piece stainless steel lug nut that is absolutely identical in every aspect to a capped nut? Those POS capped nuts are so easily damaged and show distortion after just a few R&R’s so matter careful a person is. That would be a total non-issue with a good SS nut.
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1962 Biscayne O-21669 MKIV/M-22 1962 Bel Air Sport Coupe 409/1,000
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#5
05-15-2025, 01:11 PM
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Would stainless be as strong as steel ? Safe ?
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......
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#6
05-15-2025, 07:30 PM
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ARP has a Stainless 300 material for fasteners. Its tensile & yield is slightly weaker than CM but still higher than a Grade 8 bolt.
__________________
1962 Biscayne O-21669 MKIV/M-22 1962 Bel Air Sport Coupe 409/1,000
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azcamaros (05-15-2025) | ||
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#7
05-15-2025, 07:32 PM
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.
__________________
1962 Biscayne O-21669 MKIV/M-22 1962 Bel Air Sport Coupe 409/1,000
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#8
05-15-2025, 08:32 PM
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GM parts book show that part number 1231722 was switched in July 1974 over to 414188.
That lug nut in the original post looks like it has a rounded head or am I seeing things?
__________________
1969 Camaro RS/SS Azure Turquoise 1969 Camaro Z/28 Azure Turquoise 1984 Camaro z/28 L69 HO 5 speed 1984 Camaro z/28 zz4 conversion 1987 Monte Carlo SS original owner
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