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wing nut
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Several types of nuts
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wing nut

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Quick Summary

Several types of nuts
Several types of nuts

A wing nut is a type of nut with protruding "wings" that allow it to be easily tightened or loosened by hand, without the need for tools. These nuts are commonly used in applications where frequent adjustments are needed.12

While the primary definition of a wing nut refers to this specific type of fastener, the term "wing nut" is also used colloquially to describe a person who advocates extreme measures or changes, particularly in politics, or someone considered mentally unsound.1

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