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unified screw thread |
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unified screw thread [′yü·nə‚fīd ′skrü ‚thred] (design engineering) Three series of threads: coarse (UNC), fine (UNF), and extra fine (UNEF); a ¼-inch-diameter (0.006-millimeter) thread in the UNC series has 20 threads per inch, while in the UNF series it has 28. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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