screw thread
- noun
- /skruː θrɛd/
- Specialized
:
rosca
- Since the 1970s, the question of the relative importance of the threaded-fastener pitch diameter to the installed fastener's performance capability has been debated by fastener and screw-thread gauging experts.
Examples
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We're back with another shop Tips, and today we're going to be talking about screw threads or bolt threads.
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The stainless-steel lifting-screw threads have reportedly been formed to Class 2-C (centralizing).
Academic text (1996) -
This program's law curve function is a very efficient tool for modeling screw threads.
Academic text (1998) -
You put a collet in here and buried in the mechanics are screw threads that receive this.
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He struggled with the lid before he got it open; he was not used to tops with screw threads.
Fiction book (1992) -
The standards detail the proper dimensions of a wide range of manufactured objects, from pressure vessels and piping to screw threads.
Academic text (2006) -
To assemble, glue the retaining ring in the round hole of the back panel so that the screw threads protrude out the rear.
Academic text (1995) -
The Society's founders discussed standards for screw threads and pump and valve dimensions during the organization's first meeting and, by 1885, were considering uniform methods of testing boilers.
Academic text (2006) -
The screw threads in screw-type nutcrackers provide a larger mechanical advantage than lever-type units have, and friction in the threads resists and arrests motion.
Academic text (2011) -
The design of the parts depends on the accuracy of the screw threads to ensure a tight fit.
Synonyms
6
7.7
A spiral ridge on a screw that lets it fit into a nut
How Fine
- Specialized
- Specialized
6
7.7
Surface Forms
Morphology
The meaning of 'screw thread' is directly compositional from 'screw' (a fastener) and 'thread' (the helical ridge), so the phrase denotes the helical ridge on a screw. This is a transparent technical compound with the constituent meanings matching the MWE sense, and similar compounds exist cross-linguistically, so a B1 learner who knows both words would readily infer the meaning.
Etymology
Screw thread comes from how the raised spiral on a screw looks like a long thread, as if a piece of string were wrapped around a rod. That image explains why the 'thread' helps the screw 'hold things together' or 'move forward' when it is turned.