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Technical On the search for castle nuts

Discussion in 'Traditional Customs' started by cdoh, Jun 1, 2015.

  1. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    I'm posting this here bc is not so much as a wanted add as just a general help question.

    I need to find 3/4-11 castle nuts for my 52 ford lower control arm to spindle. It's a really odd thread and wanted to know if someone out there knows of a source to either buy them or have them made.
     
  2. NAPA auto parts my friend,they usually carry a wide selection of Dorman .HRP
     
  3. squirrel
    Joined: Sep 23, 2004
    Posts: 55,931

    squirrel
    Member

  4. The37Kid
    Joined: Apr 30, 2004
    Posts: 30,627

    The37Kid
    Member

    Roy Nacewitz (if I spelt it correctly) makes just about every piece of hardware Henry made, check his website. Bob
     

  5. I got 2 five gallon spackle buckets full of old hardware, c'mon over and dig through it.
     
  6. GTS225
    Joined: Jul 2, 2006
    Posts: 1,244

    GTS225
    Member

    I just checked McMaster-Carr, and they don't list a nut in that thread. They do list a tap in 3/4-11.5, touted for garden hose thread. Probably won't work.

    Roger
     
  7. 40Standard
    Joined: Jul 30, 2005
    Posts: 5,963

    40Standard
    Member
    from Indy

    check with Carquest
     
  8. Slopok
    Joined: Jan 30, 2012
    Posts: 2,919

    Slopok
    Member

    Have you tried Fastenal?
     
  9. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    I saw that today. I got excited when I saw the 11 but then I saw the half and got sad. I can't believe McMaster let me down.
     
  10. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    I haven't. But I will now. I'm making a list of suggestions for you guys to call tomorrow
     
  11. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    I'm trying to find your location but I'm using the Mobil app and it's not loading your page. Where are you at?
     
  12. squirrel
    Joined: Sep 23, 2004
    Posts: 55,931

    squirrel
    Member

    says NY on his profile
     
  13. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    Damn it

    Thanks for checking for me
     
  14. blowby
    Joined: Dec 27, 2012
    Posts: 8,661

    blowby
    Member
    from Nicasio Ca

    Sure it's not 3/4-10 or 5/8-11? No offense, just seems odd.
     
  15. gatz
    Joined: Jun 2, 2011
    Posts: 1,817

    gatz
    Member

    that IS an odd thread. Very close to 10 tpi which is very coarse for the application.
    I would think they would have used a fine thread such as a (common) 16 tpi for a nut that holds a spindle to a control arm....then gets cotter-pinned.
    The finer the thread, the easier it is to get a slot lined up with a hole.
     
    lothiandon1940 likes this.
  16. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    Well I measured the bolt to be 3/4 and the gauge that fit was 11. It is corse thread. The bolt is actually threaded the entire way. And there are thread in the control arm and in the spindle.
     
  17. greybeard360
    Joined: Feb 28, 2008
    Posts: 2,074

    greybeard360
    Member

    Fastenal shows 3/4-10 and 16 ..... no 11
    That would be a very odd specialized thread.
     
  18. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    Right. I think it's a specific part that ford made back in the day. Why. Is beyond me
     
  19. flatheadmurre
    Joined: May 23, 2014
    Posts: 41

    flatheadmurre

    One way should be to put it in a lathe and cut the threads then off to heat treathment or just run as is.
     
  20. young'n'poor
    Joined: Jan 26, 2006
    Posts: 1,281

    young'n'poor
    Member
    from Anoka. MN

    I looked at Mac's auto parts, cg ford parts, and shoebox central and all they carry is 3/4-10 or 3/4-16. google gave me loads of those two sizes and newer(80's) trucks used 3/4-20. Sorry thats not much help, but maybe a quick call to kanter could find you one
     
  21. Sorry about leading you on... I doubt I have anything like that around. But people locally stop by to dig through my stash now and then.

    The 3/4-11 is an odd thread, the only listings I see are the 10 & 16 pitch threads. Since that is such a unique thread, a new nut would have to be single-pointed on an engine or CNC lathe. I looked at the C&G Ford site, no ball joints on a '52 Ford? These are king pins? I figured you could buy a ball joint and get the hardware with it.
     
    cdoh likes this.
  22. drptop70ss
    Joined: May 31, 2010
    Posts: 1,201

    drptop70ss
    Member
    from NY

    Last edited: Jun 2, 2015
    cdoh likes this.
  23. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    This is gonna be a real thorn in my side. Good old Henry had to pull the old switcherooon me with the thread pitch. Ha. My best bet might just be having one made. Im thinking that they might only do that for large orders though
     
  24. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    I'll snap a few pictures tomorrow when I'm back with the car. It's a weird set up that I haven't seen before.
     
  25. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

  26. shivasdad
    Joined: May 27, 2007
    Posts: 584

    shivasdad
    ALLIANCE MEMBER
    from Texas

    @cdoh I just bought lower control arm outer shift kit from Early Ford Parts for a 1953 Ford. I have the old nut if you need it, or just get the whole kit with new nut, rubber biscuits, and bolt with grease fitting for $33.85. I had to get a whole new lower control arm and bought it from the place in Minnesota on the link above. They seem to have good stuff.
     
  27. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    I'll check the site today. Is the nut is good condition still. Mine was really jacked up
     
  28. shivasdad
    Joined: May 27, 2007
    Posts: 584

    shivasdad
    ALLIANCE MEMBER
    from Texas

    I'll contact you when I get to the shop. The nut came off easy enough, so it's probably okay. I too had the same futile search for the oddball thread. My customer's car had a messed up threaded area on the lower control arm. It simply wallowed out through the years. Before I took it apart, I thought I could weld a new bung in and replace the shaft. I didn't realize the control arms were threaded all the way through.
     
  29. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    Exactly. When I got the nut off I thought the bolt was rusted in place until I found out it was thread. Strange design haha.
     
  30. cdoh
    Joined: Apr 30, 2014
    Posts: 216

    cdoh
    Member
    from chicago

    I noticed too that on the passenger side upper has a nut barley thread on. Now I know why it's like that. The previous owner must have run into the same problem
     

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