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Audemars Piguet

They don't screw them in. They drop the hex head bolt into a recessed hex cutout.

 

Then a special female type screw attaches from the back side, over the hex bolt. So hex head bolt cannot rotate in its hex shaped recess, so precise tightening happens from the female screw on back.
This thread is not at all about the alignment of the bolts. All AP Oaks / Offshores are assembled the same in this regard. This thread is about the small slot that is cut into the hex bolt itself.

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