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    Quick Links: Towing advice...tranny cooler or no Choosing appropriate WDH Please Help with finding quick detach mirrors for towing Transmission cooler Brake controller and towing mirrors - 2017 SR5 Towing 5000-6000lbs with a 2018

Frame hitch receiver mounts - what size bolts?

Discussion in 'Towing' started by ttylerr, Jun 25, 2010.

  1. Jun 25, 2010 at 10:58 AM
    #1
    ttylerr

    #1
    ttylerr [OP] Well-Known Member

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    Does anyone know what size and grade (i assume 8 or 10.9) bolts are used for the factory nuts welded to the frame for the hitch receiver are? i cant seem to find a spec in the fsm or on here anywhere... thanks for your help!
     
    ttylerr, Jun 25, 2010
    #1
  2. Jun 30, 2010 at 11:28 PM
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    Bodete

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    Bodete Well-Known Member

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    Bodete, Jun 30, 2010
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  3. Jul 2, 2010 at 8:20 AM
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    TacoPorn

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    TacoPorn Well-Known Member

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    Not sure the grade but I think they are 12mm
     
    TacoPorn, Jul 2, 2010
    #3
  4. Jul 27, 2010 at 5:38 PM
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    Taco.Tim

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    Taco.Tim Well-Known Member

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    Looking!
    Don't know about grade, but it should be a quality fastener. M12 bolts come in 1.75 (coarse), 1.5 (medium) and 1.25 (fine) pitch. The frame nuts look to be M12 x 1.25, so I am looking to buy M12 x 1.25 - 35mm long bolts tomorrow.
     
    Taco.Tim, Jul 27, 2010
    #4
  5. Jul 27, 2010 at 5:42 PM
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    larryde09

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    larryde09 Well-Known Member

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    x2...if memory serves, my aftermarket hitch came with
    $13 M12x1.25 mm Self-Locking Nylon Insert Hex Lock Nuts, Pack of 6
    M12x1.25. The pitch might be wrong, but I do know they were 10.9 grade. I'd recommend 10.9 anyway...you can't go wrong by getting a higher quality bolt. If you still can't find the answer, try going to an aftermarket hitch's website and see if their installation manual states what hardware it comes with.
     
    larryde09, Jul 27, 2010
    #5
  6. Jul 28, 2010 at 4:30 PM
    #6
    Taco.Tim

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    Taco.Tim Well-Known Member

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    Looking!
    Bought the 12 x 1.25 bolts, 35mm long today, and they work great. Just waiting on my Draw-Tie plug in harness to arrive, and it should be good to go.

    Tim Glover
     
    Taco.Tim, Jul 28, 2010
    #6

Products Discussed in

ALEOED M12x1.25 mm Self-Locking Nylon Insert Hex Lock Nuts, Pack of 6
$12.99
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