Turning custom screws in small quantities is a significant part of my CNC turning business.
Here is a pair of typical screws I’ve cut.
The screw is turned from 303 stainless steel and is 0.500″ long.
These screws are a bit challenging to turn because they’re so long compared to their small diameter.
Normally they’d be made on a Swiss machine, but the quantities were far too small to justify setting up a Swiss lathe.