On Tue, 31 Jul 2018 17:54:28 +0100, "NY" wrote:

The opposite of this is the flat-blade "screw head" on my old Peugeot 306
for securing the spare wheel cage to the underside of the boot.

And for mayhem: use a "yankee drill" with a flat screwdriver blade. The ratio of
torque to pressure is fixed by the pitch of the leadscrew, and optimized so that
the blade digs deep into wood, paint, and flesh.


Thomas Prufer