driveshaftshop bolts, is it safe?
 

i have installed an aluminum DSS driving shaft but the flange is a lot thicker than the stock one, is it safe to reuse the stock bolts even if there is like half the thread not used on the nut?

http://img.photobucket.com/albums/v3...ps1a684584.jpg

That looks like enough thread engagement to me as long as they are not lock nuts and thus not utilizing the locking part at the top of the nut.

How does that bad boy feel?
Looking into getting the same thing.

How much would it cost to go get new bolts and do it right compared to how much will it cost you when it fails.....?

+1 I'm intersted as well!

does it torque to spec?

When we do bolting in industry, we try to have at least 2-3 threads above the end of the nut. What you have would not be considered acceptable.

That would not fly on aircraft. 2-3 threads through the nut. I had a similar problem with my driveshaft. I ditched the stock washers and used loctite red, which is a pretty hokey fix, getting the right bolts would be the right thing to do. Holds fine but might be a PITA if you have to rotate your driveshaft.

Go spend $4 on bolts, that's not safe at all.

yeah the thing is to find bolts with a grade high enough for the job. I don't have such a shop around.

I must admit i didn't even think about taking the washer off, that would give me something like 2 threads in addition.

You don't have a local hardware store with grade 8 bolts and nuts? I would go with a longer bolt, nut, and a lock washer if you are worried.

They aren't standard bolts. They are partially threaded so shear load isn't taken through the thread. You'd probably be ok to use a little loctite and remove the washer if it gives you enough engagement.

1 big vote for NOT acceptable.

Nope. Replace with correct length. Probably grade 8 if I had to guess.