U-Bolts: To re-use or not?

Geez, General spring sells U bolts in sets for like $6.95. Rani is dead right about how the threads are designed. I've reused them before......but that doesn't make it right. It makes it dangerous. Be dangerous if you want to. Just remember, the torque on them is only 45 LB FT. So if they have been used, they may not stay tight.