On Thu, 17 Jan 2008 04:53:09 +0000, Christopher Tidy wrote:
Dave Hinz wrote:

Once aluminum, once mystery-steel for a nut that was expected to have
about 3 uses ever. Lots of lube and it came out OK but I wouldn't
suggest it for a "real" project.

Interesting. Did you use ordinary mild steel for the tap or drill rod?

It sparked like it had some carbon in it but, I inherited a large amount
of "mystery metal". Sorry to not be a lot of help.

On that topic, anyone have a rundown of paint color codes for steel? I
don't know the vendor and last time I looked, I found about 4 different
standards referenced by various sites I found on google. So it's racks
of mystery metal, I'm afraid. For stuff with a spec, I buy to that
spec, of course.