File:JFIScrewThread300.png
JFIScrewThread300.png (300 × 363 pixels, file size: 34 KB, MIME type: image/png)
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Date/Time | Dimensions | User | Comment | |
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current | 10:39, 9 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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