SCREWTHREAD

Screw thread

The operator rotates the two vertical bevel gears that have threaded holes, thereby raising or lowering the two long vertical threaded shafts which are not free to rotate .]]

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screw thread

Noun

  1. A helical ridge which wraps around an elongated cylinder, or a groove spiraling around the wall of a bore, used mostly on fasteners and their connection points.


The above text is a snippet from Wiktionary: screw thread
and as such is available under the Creative Commons Attribution/Share-Alike License.

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