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Unread 06-27-2013, 06:58 AM   #1
DBLJ
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Front driveshaft hex bolt size

One of the bolts at the transfer case side of my driveshaft backed out. What size is it. Qtec isn't much of a help with their descriptions.

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Unread 06-27-2013, 07:00 AM   #2
NotURMailman
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If you're talking about the bolts that hold the driveshaft to the yoke, you can get them in a package in the "Help" (Motormite?) section at most auto parts stores.
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Unread 06-27-2013, 07:08 AM   #3
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Quote:
Originally Posted by NotURMailman
If you're talking about the bolts that hold the driveshaft to the yoke, you can get them in a package in the "Help" (Motormite?) section at most auto parts stores.
I am, and I didn't even think of that. I figured it would be the same size as the front strap but I was wrong. Ill swing by later and check it out.
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Unread 06-27-2013, 11:34 AM   #4
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Originally Posted by DBLJ View Post
I am, and I didn't even think of that. I figured it would be the same size as the front strap but I was wrong. Ill swing by later and check it out.
I want to say its a 5/16x24 but I could be wrong.

I know there was a lengthy thread on this in the past that I posted in that had the answer, It is a common thread size but kind of an odd length. I'll see if I can find it.
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Unread 06-27-2013, 11:51 AM   #5
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Just checked my old model 20 out of my 2000 wrangler it is 1/4 NF...Jon
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Unread 06-27-2013, 11:57 AM   #6
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Originally Posted by rchase559 View Post
I want to say its a 5/16x24 but I could be wrong.
Yep.

I can't remember if it's 1" or 1-1/4" though.
There's plenty of room for the 1/2" standard head bolt on the transfer case side of the yoke too. No need to get allen bolts.
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Unread 06-27-2013, 12:00 PM   #7
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If I am on the same bolt . An 8mm wrench is what seems to be the most popular answer but for the actual bolt size , Sorry . I ended up with a nice skinned knuckle when the 8mm wrench I was using slipped so I tried a 5/16. It very well could of just been the quality of my wrench but the 5/16 fit tighter and was able to loosen the bolt.
Now is when the math usually is posted to explain how little the difference actually is and should make no difference . Either way 5/16 is smaller , who cares. Its just another option.

EDIT: After all of that I think you are looking for the actual bolt size , oops
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Unread 06-27-2013, 12:42 PM   #8
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Originally Posted by WKdeuce

Yep.

I can't remember if it's 1" or 1-1/4" though.
There's plenty of room for the 1/2" standard head bolt on the transfer case side of the yoke too. No need to get allen bolts.
The stock bolts are hex head flange bolts (maybe screws, I always mix the nomenclature up). There is no Allen wrench involved. I have used regular hex head cap screws but prefer the flange version so I can use a socket and ratchet rather than a open end wrench.
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Unread 06-27-2013, 12:46 PM   #9
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Originally Posted by rchase559 View Post
The stock bolts are hex head flange bolts (maybe screws, I always mix the nomenclature up). There is no Allen wrenches involved.
The stock bolt heads are 5/16ths with a flange andr a 5/16ths thread bolt.
All I was saying is a standard 5/16ths bolt with a 1/2" head will fit, there's no need to try to find something with a small head (like an Allen or whatever).
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Unread 06-27-2013, 01:44 PM   #10
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Originally Posted by WKdeuce View Post
The stock bolt heads are 5/16ths with a flange andr a 5/16ths thread bolt.
All I was saying is a standard 5/16ths bolt with a 1/2" head will fit, there's no need to try to find something with a small head (like an Allen or whatever).
Okay. I was confused with the Allen part but that clears it up. I still prefer the flange bolts but to each their own.
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Unread 06-27-2013, 02:02 PM   #11
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i use the bolts from a precision u joint strap kit # 360-10, works great 5/16 fine thread, with a smaller head than normal
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Unread 06-27-2013, 02:45 PM   #12
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I just checked again both axle yokes are 1/4 NF I suppose there could be different yokes of the 44 I am sure is different???? Never really paid that much attention to the kit. Just bought and installed...Jon

Looked at the T/C it is a 5/16 NF U Bolt, no threads in the yoke
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Unread 06-27-2013, 03:50 PM   #13
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Originally Posted by jeepmutiny View Post
Looked at the T/C it is a 5/16 NF U Bolt, no threads in the yoke
Yep. It's not the TC output yoke that has the threads, it's the centering ball portion of the double cardan assembly.

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Unread 06-27-2013, 03:53 PM   #14
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Originally Posted by sandfox4 View Post
i use the bolts from a precision u joint strap kit # 360-10, works great 5/16 fine thread, with a smaller head than normal
That didnt fit.
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Unread 06-27-2013, 09:07 PM   #15
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That didnt fit.
huh... well it worked on the 01 i just did, maybe 05 is different , pull one of your other bolts and take to the parts store, was it to big ? small ?
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