I am looking to assemble a Ap1 shell I have sitting around and coming to a snag finishing up the rear end. I would rather avoid paying 5.38/per bolt from Majestic for the bolts connecting the axle to the rear diff and i know they would be readily available at a hardware store. The issue is i cant find a definite size on the bolts/nuts? Any help would be appreciated! I know i could always just see what fits but i would rather not half ass such an important piece.

 

Ttt

 

I would not use a hardware store bolt, or nut for this. You have been warned. If you must know it's a 10mm thread diameter 1.25mm pitch, and would at least use a self locking nut. Again you have to use at least a grade 8 bolt,at the very least. Doubt you'll find it at a hardware store, but if you can, I suppose you can make it work. You'll want to use a self locking nut, or a locknut washer or something to keep the nut from backing out. Locktite if you're a masochist.

 

I think it's a 17 or 14mm hex head I can't remember. I should just say it's 7/8ths or something and someone will be in to correct me soon enough.

 

It's a 14mm head bolt iirc.

 

The factory bolts are shouldered high strength flange bolts. Without the shoulder, the axles and diff will work directly against the threads destroying the bolt. You will not find a shouldered bolt like this in any store, anywhere. Anything you buy aftermarket will be full thread, no shoulder.

I wouldn't cut corners here, the bolts are well worth it.

 

Agreed with billman, The shoulders are a part of the strength otherwise the 2 flanges can move because of the play.

 

Like clockwork Easiest way to get the right answer on the internet is not to ask a question but to post the wrong answer.