File:Lead and pitch in screws.png

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    Description
    English: Diagram showing the difference between "lead" and "pitch" in screws. The lead is the axial distance the screw moves in one revolution. The pitch is the axial distance between adjacent threads. They are the same in "single-start" screws, but in "multiple-start" screws the lead is equal to the pitch muliplied by the number of "starts". Alterations to original drawing: Removed dimensioning and added colored labels
    Date
    Source Downloaded original drawing from Erik Oberg, A. L. Valentine, Joseph M. Stabel (1910) Screw thread cutting, 3rd Ed., The Industrial Press, New York, p.4, fig.2 on Google Books
    Author Unknown authorUnknown author
    Permission
    (Reusing this file)    		 Public domain in USA - Published in USA prior to 1923

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    This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1931, and if not then due to lack of notice or renewal. See this page for further explanation.
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    This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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    Date/TimeThumbnailDimensionsUserComment
    current19:14, 3 April 2011Thumbnail for version as of 19:14, 3 April 2011724 × 384 (28 KB)wikimediacommons>Chetvorno{{Information |Description={{en|Diagram showing the difference between "''lead''" and "''pitch''" in screws. The lead is the axial distance the screw moves in one revolution. The pitch is the axial distance between adjacent threads. They are the same i

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