Threaded holes and rivnuts. Now a rivnut is a part, but the fabricator keeps it in stock instead of us. More shaped stampings and castings so that spacers aren't needed. Reducing parts also reduces handling of parts. Probably CAD makes it easier to design these things in.
At where I work, we use hex head (trying not to say Allen). I see lots more Torx in products as well.
At where I work, we use hex head (trying not to say Allen). I see lots more Torx in products as well.