Wingnut (hardware)
A wingnut or wing nut is a type of nut with two large metal "wings", one on each side, so it can be easily tightened and loosened by hand without tools.
A similar fastener with a male thread is known as a wingbolt.
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Three wingnuts
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Bicycle wingnuts
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Three wingnuts securing a cymbal and its mounting
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Three wingnuts and wingbolts supporting a drum
Read more about Wingnut (hardware): Wing Nut Types, Bicycles, Drum Hardware, Seltzer Bottle, See Also