Do you want the nut to be flush with the surface, or just to center in
the hole? What thread size? You could get steel hex stock, cut to
length, drill/tap the center, and turn the taper end of each nut on
the lathe. Cheap that way.
JR
Dweller in the cellar

On Thu, 06 Oct 2011 17:28:05 -0500, DougC
wrote:

Is there such a thing? The usual places show nothing of the kind.

Countersunk-head screws fit flush with the surface of course, but
another aspect of them is that they stay centered in the holes. Is there
a nut with a conical contact area to fit similarly?

I know a lot of nuts have one or both sides sort of a rounded-off, but
the contact area is not nearly the entire possible.... and I know I
could trim some regular high nuts or coupling nuts off if I only needed
a few, but that would be impractical when I needed 50-100-200 or more.
Even less so when I needed smaller sizes--#8, #10....



In a perfect world there would exist 'countersunk' nylon-washer-style
locking nuts.... as long as they're not a mil-spec item where a 1/4-20#
costs a dollar each....
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http://www.seanet.com/~jasonrnorth
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