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Hot Rods flat u bolts for leaf spring suspension

Discussion in 'The Hokey Ass Message Board' started by boogeracng, Feb 22, 2020.

  1. boogeracng
    Joined: Feb 13, 2008
    Posts: 340

    boogeracng
    Member
    from Eureka,MO

    Looking for a source for rear axle/leaf spring U-bolts (3" diameter axle tubes) that
    are either manufactured or machined FLAT on the inner diameter at the point of contact
    with the axle tube. I have multiple bolts that are round at the contact point, and they work
    fine for mock up....but the round ones compress and "indent" the axle tubes. Any one?
     
  2. badshifter
    Joined: Apr 28, 2006
    Posts: 3,227

    badshifter
    Member

    IMG_2715.PNG
    68-73 Mustang U bolts were flat in the bend.
     
    uncle buck likes this.
  3. TCTND
    Joined: Dec 27, 2019
    Posts: 143

    TCTND
    Member

    I've seen u bolts like that for u joints, but never in a large enough size for an axle. It wouldn't be too hard to machine spacers to spread the load. Turn a ring with the ID equal to the axle OD then machine a groove on the outside to fit the u bolt and cut it in half for 2 spacers.
    regards,
    Phil
     
    clem likes this.
  4. Mr48chev
    Joined: Dec 28, 2007
    Posts: 27,520

    Mr48chev
    ALLIANCE MEMBER

    I don't remember ever seeing an axle tube that was noticeably indented by a U bolt.
     
    egads and clem like this.

  5. lemondana
    Joined: Feb 21, 2009
    Posts: 108

    lemondana
    Member
    from Lincoln NE

    All Mopars had the flattened U bolts with a crosshatch anti-slip pattern on the inside, so they wouldn't crush the axle tubes. And Ford. GOOD engineering!. A place called AMK has them with many other special bolts and fasteners. They have a big catalog, 10 or 15 bucks, but well worth it! www.amkproducts.com
     
    Penetrator and alanp561 like this.
  6. uncle buck
    Joined: Feb 13, 2007
    Posts: 1,602

    uncle buck
    Member

    What /\ he said , 68-73 Mustang


    Sent from my iPhone using H.A.M.B.
     
  7. larry k
    Joined: Feb 23, 2009
    Posts: 319

    larry k
    Member

    Saint Louis spring ! In " well " Saint Louis mo , they can make em!
     
    alanp561 likes this.

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