locknut

/ ˈlɒkˌnʌt /

noun

1. a supplementary nut screwed down upon a primary nut to prevent it from shaking loose

2. a threaded nut having a feature, such as a nylon insert, to prevent it from shaking loose

Example Sentences

The locknuts were not tightened properly before the test, according to a report by the board.

Read more on Seattle Times

One of the parts was a locknut that secures the rotor on the Kiowa attack helicopter.

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The company makes components, such as locknuts and fasteners, for trucks, cars and the aerospace industry, as well as components for utility and telecommunications systems.

Read more on Chicago Tribune

Two locknuts and a thumbscrew take up all lost motion yet afford perfect adjustability and easy separation for cleansing.

Read more on Project Gutenberg

The defective locknuts were found as far away as Kuwait.

Read more on Washington Times