U-Bolts: To re-use or not?

Got a new set with my hotchkis springs will be using those in my 67.

Got a used set with a 2001 ford explorer rear going in my other car. Oiled up the threads, the nuts came off pretty easily once i got past the initial torque. Truck was in a dry environment its whole life. Everything came apart easily. I will beadblast, prime, paint, and reuse them.

I have reused U bolts on plenty of projects as long as they were not rust pitted, or the nuts had a hard time coming off. Never had any issues.