Can't find rear propshaft bolts

C

crsurf1

New member
I've been to the GMC and Chevy place, and they can't find the right bolt for the rear of the propshaft where it bolts to transfer case. They had the fronts and the computer showed the rear bolt, but they can't or don't want to mess with it. Can I just fing a grade 8 bolt of the right size and use that? Anyone have four spares they want to part with? I had to destroy most of the bolts removing them because the original owner used a vice grip to tighten them before. What size are they as I can get grade 8 cap screws (allen) at work. Got the local shaft guy building me a custom shaft as mine is toast.
Thanks
Craig
Sy1542
 
SY2932

SY2932

Administrator
The rear bolts are metric: M12 X 1.75 X 25MM grade 10.9 (metric fasteners have a different rating-10.9 is equivalent to grade 8 in S.A.E). Your best bet at scoring them will be through a local machine shop. I replaced my front and rear ones with hex flange bolts to get away from the stock torx bolts. Tighten them to 70Nm or 52 ft lbs. HTH's

Mike Campbell
 
C

crsurf1

New member
Bolts

Bolts

I'll try and get out tomorrow and find some. I appreciate the info and the quick response.
Thanks
Craig
 
SY2932

SY2932

Administrator
No problem, glad that I could help :D . BTW if you want to replace the front ones as well, the dimensions are M10 X 1.50 X 25 MM. Same torque as the rear bolts. Have a better one!

Mike Campbell
 
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