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U-Bolt size Need Help

Discussion in 'Suspension' started by NicksRig, Oct 15, 2009.

  1. Oct 15, 2009 at 5:25 PM
    #1
    NicksRig

    NicksRig [OP] Well-Known Member

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    I just purchased 4 u-bolts to install since adding a AAL. I realized after getting home that they are 1/2" whereas the factory U-bolts are 5/8"(correct me if I am wrong). Are these going to be strong enough or should I take them back and get different ones?
     
  2. Oct 15, 2009 at 5:27 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Take them back. Get the right size.
     
  3. Oct 15, 2009 at 5:29 PM
    #3
    NicksRig

    NicksRig [OP] Well-Known Member

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    Done! Thanks again.
     
  4. Oct 15, 2009 at 5:36 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    ;)
     
  5. Oct 15, 2009 at 5:37 PM
    #5
    Beefed Taco

    Beefed Taco Taco Vending Machine Vendor

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    Your stock u-bolts should be 1/2". 5/8" on a u-bolt is huge.
     
  6. Oct 15, 2009 at 6:05 PM
    #6
    NicksRig

    NicksRig [OP] Well-Known Member

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    Like I said, I am not sure on the factory size (9/16"??). They just seem a little bigger than the 1/2" I bought at the store.
     
  7. Oct 15, 2009 at 6:13 PM
    #7
    Beefed Taco

    Beefed Taco Taco Vending Machine Vendor

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    Here is a pic of 1/2" cheapos grade 3 next to my 9/16" grade 8's. Stock should have been closer to 1/2" than 9/16". The 9/16" will fit your plates w/o drilling though. I've sold a couple pairs of 9/16" grade 8's to a couple X guys....

    URDY-pipeandU-BoltsBeefed11-02-0-3.jpg
     
  8. Oct 15, 2009 at 6:18 PM
    #8
    NicksRig

    NicksRig [OP] Well-Known Member

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    The ones I bought are 1/2" grade 5. Should I just get beefier ones?
     
  9. Oct 15, 2009 at 7:17 PM
    #9
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    I would get the same size/grade as the ones that were on there.
     
  10. Oct 15, 2009 at 7:31 PM
    #10
    Beefed Taco

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    1/2" grade 5 will be great. Just stay away from the cheapos at your local parts store. They're grade 3 China with a torque rating of 30 ft. lbs. Yours should be about 70-90 ft. lbs.These are my 1/2" grade 5 USA steel custom bent at the local spring shop I do a ton of business with. Even the threads aren't cut as deep so there is no play / movement in the nut at all. I highly recommend staying away from lock washers too. They'll deconform, crack, split & break and then your stuff is loose. Paint the threads when you're done so they don't rust and it'll all come apart nice when you need it to. I paint a white stripe on the rear of the nuts so I can *see* that they are tight.

    Beefed blocks#3. 00031.jpg
    11 00000.jpg
    Beefed kit pictures #1 00016.jpg
     
  11. Oct 16, 2009 at 8:35 AM
    #11
    NicksRig

    NicksRig [OP] Well-Known Member

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    Thanks dude. I am going to go ahead and install the ones I bought yesterday when my truck is back from getting aligned. Whats the difference between the rounded ones like in your picture vs. the squared ones that come stock?
     
  12. Oct 16, 2009 at 10:32 AM
    #12
    sonjay

    sonjay Well-Known Member

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    You wouldn't know what diameter the U bolts would be? I tried to flip my ubolts when I got my rear springs but couldn't find the right size u bolt.
     
  13. Oct 16, 2009 at 10:40 AM
    #13
    SC4333

    SC4333 Well-Known Member

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    I just went out and measured my U-Bolts. They are exactly .510, so 1/2 is the winning ticket with a 'stock' setup.
     
  14. Oct 16, 2009 at 12:44 PM
    #14
    NicksRig

    NicksRig [OP] Well-Known Member

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    Blacked out Skid plate, block heater, bug deflector, blacked out headlights, tinted fronts, OME 3" lift, Toytec AAL, Revenge-Fab Sliders, K&N Air Filter
    Perfect!:p
     
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