Torque specs needed.......

I did a search and was unable to locate any torque specs for 1/2" U-bolts and shackle/spring bolts. The two manuals I have (non-factory of course) indicate there is a torque spec for these, but does not give it. Any help would be greatly appreciated, thanks.

 

1/2" is 50, 9/16" is 100. Personaly, I have 1/2" ubolts up front and don't really like them. I stripped them out when I was installing them and would never get them again.

 

Here is a link to standard torque specs by the Engineers Handbook:

http://www.engineershandbook.com/Tables/torque2.htm

Lot of good information there.

 

The place that custom bent/threaded mine who works for semi's too, said that for mine to go to 45lbs. Right now it's plus/minus 5 per side, as my torque wrench and the floor was too close, so I extended a line to the top with a sharpie, until I get a good wrench.
And I think they're 9/16ths but could be 1/2
I can't remember off the top of my head, too much is going in right now.