lock nut
Americannoun
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a nut specially constructed to prevent its coming loose, usually having a means of providing extra friction between itself and the screw.
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Also called jam nut. a thin supplementary nut screwed down upon a regular nut to prevent its loosening.
Etymology
Origin of lock nut
First recorded in 1860–65
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.
The lock nut survived the last check, so back it goes on the bearing again.
From New York Times • May 5, 2010
A pan-head bolt and a lock nut could be used instead of a lag bolt if you have access to the underside of the mounting surface.
From Time Magazine Archive
The law, by implication, also called for a strong, experienced administrator, and Quesada's whole life and personality fit the law like a made-to-order lock nut.
From Time Magazine Archive
To lock the setting into place, retighten the 4mm Allen first, and then tighten the 12mm lock nut.
From Time Magazine Archive
To adjust: Loosen lock nut "A," remove clevis pin "C" and turn yoke "B" to obtain proper length.
From Essex Terraplane Six 1933 Owner's Manual of Information by Anonymous
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
