In ,
Bob Engelhardt typed:

Improper attribution: I did not write that.

Twayne

Twayne wrote:
Bob Engelhardt typed:
Ah, not so. Well, sometimes, maybe. The fine thread
screws are double-threaded, ...

No, they are not double-threaded. ...

Well, rather than get into a ****ing contest, I took a
picture. It's a drywall screw, with paint stick filling
its grooves and a pick run in one thread:
http://home.comcast.net/~bobengelhardt/DrywallScrew.jpg

That this DW screw IS double threaded is clear. I did not
assert that they all are - I haven't looked at all of
them. Apparently you have not either.

HTH,
Bob