Originally Posted by ratmonkey
Grade 2? Do you know what the grades mean? Please educate yourself on fastener strength.
No less than grade 8 hardware please.
I would use none of the alloys you listed.
Dude, why do you think i posted this question? There's no reason to be snarky.
I have heard that grade 8 hardware is highly recommended in most of these kinds of applications. However "Grade 8" threaded rods do not seem to be very common. At least not in my searches so far and definitely not in the supplier whose link I posted above. And as far as educating myself on fastner strength, according to this grade chart
grade 2 has a minimum tensile strength of between 60k-74k psi. Seems like quite a bit to me. But then again I really don't know what kind of pressures these links are put through.