JFIScrewThread300.png(300 × 363 pixels, file size: 34 KB, MIME type: image/png)


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


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current17:39, 9 October 2007Thumbnail for version as of 17:39, 9 October 2007300 × 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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