Originally Posted by Skyline

I just installed the Febi ball joints on my thrust arms, (see above). No way would I recommend using the hex head bolts that come with these ball joints. They totally suck. The hex hole is way too shallow, and it will not allow very much torque applied until the hex socket slips out. Which is asking for a major hassle when and if they need to come out again in a few years. I'd order up a new set of the stock inverted Torx bolts.