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OT: Carriage bolt installation help.

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  • elf
    replied
    Originally posted by Doozer View Post
    Machine the bolts you need out of stainless.
    You are a machinist ? ? ?

    -D
    See Post # 13

    Leave a comment:


  • Doozer
    replied
    Machine the bolts you need out of stainless.
    You are a machinist ? ? ?

    -D

    Leave a comment:


  • rickyb
    replied
    Or you could drill through the bolt and install a pin that would wedge cross corners in the hole

    Leave a comment:


  • Mr Fixit
    replied
    HI Guys,

    Sorry for the delayed response, been away from the computer. These are great suggestions, I will be looking into the idea of the double nut and see how that works. I new you would come through for me, there is so much knowledge here and most everyone is willing to share which make this the best forum for help when it's needed.

    TX
    Mr fixit for the family
    Chris

    Leave a comment:


  • Hawkeye
    replied
    Originally posted by deltap View Post
    Buy them and inch longer and assemble them hand tight. Lock 2 nuts on the outer end and use them for the hold back wrench.
    I was going to suggest grinding two flats on the end of the threads and holding with vise grips, but this is better plan.

    leave the double nuts on the bolts as a clue for the next person that wants to take the bumper off.

    Leave a comment:


  • Baz
    replied
    Screwdriver slot in the threaded end if you can get at it when in place. If there is not enough free thread for the locknut idea from Deltap above you can put nut on the short exposed end to say 1.5 turns the insert another bolt in the back of that to lock it ie the bots end up end to end each half into the one nut.

    Leave a comment:


  • elf
    replied
    Here's a video that shows how a machinist would solve the problem.

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  • andywander
    replied
    It seems as if the problem is, that standard carriage bolts don't work, because the holes in the bumper are made for a special bolt, and not for the square section of a standard carriage bolt.

    I don't think buying standard carriage bolts in stainless, or in chrome plated finish, will make any difference.

    I think he needs to get the special bolts that fit his bumper, or modify standard carriage bolts to work.

    Leave a comment:


  • ChazC
    replied
    Bolt Depot has 7/16"-14 chrome plated steel carriage bolts up to 3" long, cheaper than 18-8 SS:

    Click image for larger version

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    Details (for the 3" ones) so you can check the square dimensions against your holes:

    https://www.boltdepot.com/Product-De...x?product=9393

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    4 (so you have a couple of spares, or to do the front bumper, too), 3" 7/16"-14 Chrome to Portland would be $31.44 + $4.95 (USPS) or $12.96 (UPS ground).


    Cheers,


    Charlie

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  • darryl
    replied
    Brian has it- though instead of JB, I'd just use 5 min. epoxy. Assemble finger tight, then at some point over the next 15 min or so, wrench on the nut to bring the parts up to contact while the epoxy can still be molded. After it's hard, you can tighten the nut up all the way. The epoxy in this case is now acting as a filler to keep dirt and moisture out, and plays no part in holding the join together. The nut and bolt hold it together like they would have anyway- and this will come apart if you needed to do that.

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  • deltap
    replied

    Buy them and inch longer and assemble them hand tight. Lock 2 nuts on the outer end and use them for the hold back wrench.

    Leave a comment:


  • BCRider
    replied
    If you know you won't need to remove then I rather like the idea of the JB Weld epoxy. But if you want to be able to remove them then I think I'd spot weld on some lumps that can be filed or carefully ground to fit the openings.

    And now you know why they are $6 each too. They're special hardware.

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  • PStechPaul
    replied
    A picture would be helpful. Have you tried 1/2" bolts?

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  • boslab
    replied
    Magnetise them
    mark

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  • brian Rupnow
    replied
    Cover the bolt threads in grease. Buy a couple of tubes of J.B.Weld and put lots of it under the head of the bolt. Shove the bolts into place and wipe off any excess J.B. Weld. Wait 24 hours. Run the nuts on over the greased threads and tighten them up with a wrench.

    Leave a comment:

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