- a nut specially constructed to prevent its coming loose, usually having a means of providing extra friction between itself and the screw.
- Also called jam nut. a thin supplementary nut screwed down upon a regular nut to prevent its loosening.
Origin of lock nut
Examples from the Web for locknut
Historical Examples of locknut
A locknut is used beneath the notched nut to hold the adjustment.
A locknut is used to hold the screw in any desired position.Measuring Tools
When the bolt has been screwed down sufficiently tight a locknut may be put on, or the first nut soldered to the end of the bolt.
- a supplementary nut screwed down upon a primary nut to prevent it from shaking loose
- a threaded nut having a feature, such as a nylon insert, to prevent it from shaking loose