mkirsch wrote:
Hardware store turnbuckles tend to be rated for only a few hundred pounds, so if you find one stretched or busted, you know why. As they are not your primary means of attachment, I say worry about it if/when it happens.
I got these on Amazon. The manufacturer rates them at 2200 pounds working load limit each. That's less than I would want if they were the primary restraints but I think they will be ok for what I am using them for. I did replace the bolts with some stainless bolts and nylock nuts. Honestly the bar is so robust I don't see these braces taking on much load.