[Walt Fricke]

Nice combination of a rounded (bullet nose)top (so the washers and nuts will drop on easily) and a hex so they can be screwed in easily with a tool, especially after cylinders etc are in place.

Though I kind of like the idea of using finer threads with flange nuts for the top, which the SuperTec studs have. Same benefit for hitting the torque specs as with the case through bolts Porsche ended up doing. Easy to use flange nuts on the regular threads, though, so the benefit of not messing with the barrel nuts isn't bolt specific.

(oops - found it)