File:JFIScrewThread300.png

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Summary

DescriptionJFIScrewThread300.png	Graphic representation of formulas for the pitches of threads of screw bolts
Date	1864
Source	Franklin Institute
Author	William Sellers
Permission (Reusing this file)	public domain
Other versions	http://anniversary.asme.org/2005landmarks3.shtml

Public domain	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, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
	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/Time	Thumbnail	Dimensions	User	Comment
current	01:39, 10 October 2007		300 × 363 (34 KB)	HokieRNB	{{Information \|Description=Graphic representation of formulas for the pitches of threads of screw bolts \|Source=Franklin Institute \|Date=1864 \|Author=William Sellers \|Permission=public domain \|other_versions=http://anniversary.asme.org/2005landmarks3.shtm

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