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On 18 Jun 2003 at 11:02, Shad Laws wrote: > > More important than thread diameter is thread pitch. > > No, that is incorrect. The pitch (which is more of a relative thing... i.e. > a coarse vs. fine, etc.) figures into the coefficient in a minor way. I disagree. A screw thread is nothing more than an inclined plane wrapped into a helix. Once you realize this, it is clear that the only thing that makes a difference is the amount of advancement per turn. > I'm not pulling this stuff out of my butt. This is from standard mechanical > engineering formulae. Please cite your source. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org