Topic: Made my own U-bolt eliminator kit

[junya92toy]

What? It can be a good thing, but it's a bad thing for steel?  I don't understand your point.

Anyway, my point was to make him aware (if he was not already) that he changed the properties of the steel. My stand would be that it's no longer the same material that was spec'ed for holding a spring to an axle, therefore I would not use it.  Seems to be working out though.   

PZ

Certain steels with a certain carbon content can be harder then steels. But they can be so hard from heating them and quickly cooling them that are become brittle. So you have to anneal it. This will keep it harder but add back ductility.

[crazykooter [OP]]

I am pretty sure the steel used for the stock U bolts had a fairly low carbon % since they tend to stretch easy.  Either or the ones ive made lasted one hard trip up the con but may break going over a speed bump.  Its nearly impossible to say. 
When I have my axles out to swap over to my other truck I plan on building some sort of gusset to keep the spring perch planted to the axle.  There isnt a whole lot I can do in regards to the bolts ive used cept wait and see what happens.