Torsion Bar Adjuster

Bolt and adjuster are both toast, don't re-use the bolt. All of those extra shiny threads indicate it's not unharmed.

That sort of thing isn't uncommon. I wouldn't say it's normal, but it definitely happens. Rust, wear, and adjusting the bolts with weight on the LCA's can damage the threads and lead to failures like that.

The parts are reproduced, and it should go without saying it's probably time to change the other side too, so buy a pair of adjusters and bolts.