Is this enough thread showing on U bolts

Could not stand these long U bolt tails. (Pic 1) Tried to trim them and botched it.

Got U bolts at Wheelers. Choices were 6.75” or 7.75”. (Pic 2). Is this enough thread engagemeny?

 

Yes, the thread protrudes from the bottom of the hex nuts.

 

I think the minimum is 2 threads past the nut.
I prefer 5-7 range to allow room for abuse.

 

For Aviation 1 1/5 threads

 

No wonder doors and tires are coming off in the air.

 

No it turned out 4 of the Bolts were never put in, and when a A&P Mechanic pits a bolt on they Torque it and use either a lock washer or loctite thread locker.

 

What torque value are you guys using on your U bolts? Haynes manual specs 37 (way too low). Forum searches range from 70 to 90 with 73 being the most common. I went 75 and paint marked the nuts to watch for movement.

 

In theory.

 

It's fine, the long nuts just disguise how much thread is actually being used, especially compared to stock.

I do 65ft lbs, 73 always felt like a bit too much.

 

Why not install a Ubolt flip kit?

 

90 ft. lbs.... at minimum 3 threads

 

Not enough for me.