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Unread 07-16-2009, 12:37 PM   #1
thaBrad
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Help attaching TC skid to frame

I work for a metal fab company and had the guys make me a TC skid. I designed it to start right after my cross member and on just past the transfer case. I'm using 4 existing holes in the frame that are 1/2" to use 1/2" bolts. And then making one more for each side right at the cross member. My help question is how to attach to the frame? I see you guys talking about nutserts but don't understand how they work. I thought of welding a 1/2" nut to the frame and bolting into that. But then that will push my skid down that much when I designed it to be the same clearance of the cross member. So if I do the nut weld idea it'll catch anything sliding across it instead of being on the same plane as the cross member. Anyways, any advise would be greatly appreciated. Going wheeling Saturday and would love to have this on.

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Unread 07-16-2009, 01:07 PM   #2
ratmonkey
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nutserts are pretty much rivets. flare and expand into the hole you need threaded.
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Unread 07-16-2009, 01:09 PM   #3
CJ7-Tim
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http://www.nutty.com/threatsert.shtml

You do not need the special tool to install threaded inserts. You can use a standard bolt and some washers to install them.


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Unread 07-16-2009, 01:29 PM   #4
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You can always try some cage nuts for McMaster.com
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Unread 07-16-2009, 01:43 PM   #5
ArloGuthroJeep
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Don't weld a nut to the "frame". If you do, as soon as you put weight on the skid plate it'll push up into the frame. You want a large contact patch between the "frame" and the skid plate.
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Unread 07-16-2009, 02:27 PM   #6
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Just go and buy some carriage bolts and fish them through the frame. Use your hand to hold the bolt while you use your other hand to tighten the nut with a lock washer behind it as tight as you can. Then use a impact wrench to pull it tight. I did this a few weeks ago to attack a stock t-case skid plate to my ZJ. Worked like a charm and only took me 15 mins.
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Unread 07-16-2009, 08:09 PM   #7
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All I used were standard nut and bolt. Held the nut inside the frame with mechanical fingures to hold it until it was tight.
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Unread 07-16-2009, 10:20 PM   #8
sandman
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most aftermarket skid plates use self tap bolts on the frame side.
http://www.skidplates.com/TCase_MJ_XJ_ZJ.asp
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Unread 07-17-2009, 05:04 AM   #9
thaBrad
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OK, I thought my frame is boxed. So how would I hold a bolt or nut inside the frame while trying to thread into it? I guess I could magnet it to help it stay? But the self tapping bolts I'll have to probably try. Thought of welding it but I like the idea to be able to remove it with ease. Thanks for the help guys.
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Unread 07-17-2009, 07:32 AM   #10
ArloGuthroJeep
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Get nutserts...
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Unread 07-17-2009, 08:13 AM   #11
thaBrad
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Quote:
Originally Posted by ArloGuthroJeep View Post
Get nutserts...
I think now I'm just going to tap the hole to thread my 1/2" bolts. Think its good enough? Can you get nutserts at an auto store or a Harbor Freight or something like that?
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Unread 07-17-2009, 08:18 AM   #12
ArloGuthroJeep
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Taping the "frame" on a WJ won't suffice...it is way too thin. There is nothing to tap really. Nutserts are probably available at an autoparts store, not sure though.
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Unread 07-17-2009, 09:14 AM   #13
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Quote:
Originally Posted by thaBrad View Post
Can you get nutserts at an auto store or a Harbor Freight or something like that?
http://www.nutty.com/threatsert.shtml


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Unread 07-17-2009, 11:59 AM   #14
thaBrad
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Quote:
Originally Posted by CJ7-Tim View Post
I need them tonight, but thanks for the website. Plus they only had up to 3/8" and I need 1/2". Gonna call around for the serts! Thanks Arlo!
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Unread 07-17-2009, 12:23 PM   #15
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Quote:
Originally Posted by thaBrad View Post
I need them tonight, but thanks for the website. Plus they only had up to 3/8" and I need 1/2". Gonna call around for the serts! Thanks Arlo!
Most any hardware store should have them. They are the way to go, you won't be able to thread your "frame" as it's sheet metal. ( well, properly anyway )
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