Originally Posted by dieselbenz1

It's just a money thing if you hold patients to a bolt design you reap the royalties. You do not support using another car company's patient unless forced too. Car manufacturers hold many patients bolt design included. At least that's what I was taught way back when.

Originally Posted by tbomachines

Does anyone have patents to Philips, torx or hex...not sure about that. Torx has more surface area than traditional hex and can therefore can withstand higher torque without stripping.