Alex Michael wrote in news:mn.e3227db94fd19b9d.119573
@gmail.com:

Can somebody tell me what this type of screw is called? It came from
a Hard Drive caddie.The screw fits into a slot so the Hard Disk doesn't
move around,that is why the thread don't go all the way.Thanx

http://www.imagebam.com/image/73aa09151484111



A type of axle screw is one app of many.

http://www.firstchoicebuildingproducts.com/axle.aspx

Is it an official name? Dunno.