Hmmm...

The part about a more confident engagement with automated assemble machines really makes sense.

I'd don't belive I've ever seen a metric Phillips. Are they usually marked? How would you know one if you saw one?

Just curious... I learn more here everyday!
-Eddie

They are easily stripped with American Phillips screw drivers. Been there, done that way too often. They are usually on metric screws. They have a little dimple about the size of a period on the head somewhere. They are also known as ISO Phillips. I have a set of Japanese (made for local use, not for export) Phillips and they fit the metric Phillips without rattle. A friend that was running radios on ships traveling around the world a few years back bought them for me. I'm careful to not wear them out.

I have seen ISO Phillips in the Jensen Tools catalog at a fairly high price.

Its possible that the pressure you put on the Pozidrive bits cut some matching notches in your Phillips screws. Generally Pozidrive bits don't fit Phillips screws tightly. Nor do Phillips bits fit Pozidrive screws tightly. When they fit right the screws and drivers don't rattle, and the screws stick to the bits well. When they are mixed, the screw heads generally suffer, sometimes ending up with round divots.

Gerald J.