On Sep 28, 1:52*pm, Red Green wrote:
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.

I could be wrong, but I think the shaft of an "axle screw" is the same
diameter for it's entire length (both the threaded and unthreaded
portions) while a "shoulder screw" has a wider unthreaded portion,
thus the name "shoulder".

Coincidentally, I just finished using a rented power snake where the
"axle screw" that holds the head on was in such bad shape that I had
to use vise grips to get it out so I could put on a cutting head.
They're getting it back with a extra long fully threaded bolt 'cuz
that's the first thing I could find with matching threads. I'll give
them back their beat up axle screw also so they don't charge me for
"damaging" their equipment.