On Mon, 17 Aug 2009 23:09:52 +0100, the renowned Mark Rand
wrote:

On Mon, 17 Aug 2009 13:47:49 -0400, Spehro Pefhany
wrote:

On Mon, 17 Aug 2009 11:21:32 -0500, Tim Wescott
wrote:

On Mon, 17 Aug 2009 12:17:03 -0400, Spehro Pefhany wrote:

What would be my best bet for getting a relatively small quantity
(current requirement is 100 pieces) of machine screws (a couple of
sizes, like 6-32) made from 0.25" dia. metal rod. The material (Nb) is
soft like copper and generally nasty to machine. I'd like a Torx or
similar head so it's not as easy to screw up as a slot.



Assuming that it's sufficiently unpleasant to machine. If you can manage to
find a way to cold form the heads, then roll forming the threads would be
relatively simple.

Mark Rand
RTFM

Thanks, Mark. That definitely sounds like a possibility. I see tooling
available for CNC thread rolling and rotary broaching of the hex/Torx.


Best regards,
Spehro Pefhany
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