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lead screw

American

[leed] / lid /

noun

(on a lathe) a rotating horizontal screw for moving the tool carriage along the work at a constant rate.

lead screw British

/ liːd /

noun

a threaded rod that drives the tool carriage in a lathe when screw cutting, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Its lead screw, liberated from the child’s spinning top that inspired its designer, still works, sending the basket merrily whirring in its plastic bowl.

From Slate • Jun. 20, 2022

WHY: The incline lead screw can shear off, causing the foot pedals to drop unexpectedly, resulting in a fall hazard to the user.

From Seattle Times • Mar. 30, 2018

The lead screw of a lathe is a screw for operating the lathe carriage when it is desired to cut threads upon the work.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

Over each lead screw pitch are thread pitches, thus on lead screw pitch 4 we have 20, 19, 18, and so on.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

When the screw for traversing a lathe carriage is used for plain feeding, it is termed the feed screw, but when it is used to cut threads it is termed the lead screw.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023