lead screw

[ leed ]

/ lid /

noun

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

Words nearby lead screw

lead on, lead one to, lead oxide, lead pencil, lead poisoning, lead screw, lead sheet, lead tetraethyl, lead the way, lead time, lead track

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for lead screw

The carriage should not be disengaged from the lead-screw after starting the cut, the tool being returned by reversing the lathe.
Turning and Boring|Franklin D. Jones
As previously explained, lead-screw S is only used for feeding the carriage when cutting threads.
Turning and Boring|Franklin D. Jones
If, on the other hand, no movement takes place, it is an indication that the pitch of the lead-screw is correct.
Measuring Tools|Unknown
This is not the case, however, when the number of threads being cut is not a multiple of the number on the lead-screw.
Turning and Boring|Franklin D. Jones

By referring to the last column, we find that the lead-screw gear should have 84 teeth.
Turning and Boring|Franklin D. Jones

British Dictionary definitions for lead screw

lead screw

/ (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