rharshberger
Well-Known Member
I prefer Robertson drive when available they are less likely to strip the head than just about any other fastener, the one I dislike the most is double square drive (8points) used on Audi CV shafts among other parts in the same area of the car.I don't like Phillips when compared to square (Robertson) or star (Torx) screws. No camming out. And I hate slotted screws. I own 2 VWs and everything is metric. Lots of hex caphead bolts and Triple Square bolts.
Triple square is used on VW's is interesting since Audi used double square fasteners on at least the 2000 Audi A6 Quattro's drivetrain (I had one and hated working on it).Triple square are also known as XZN. Imagine taking a square drive & rotating it 3 times, 30 degrees each time. You end up with 12 points. On my 2000 & 2005 Golfs they are used to attach the drive shafts to the transmission and a few other places.View attachment 431572