Allen bolt

noun

Al·​len bolt ˈa-lən- How to pronounce Allen bolt (audio)
hardware
: a bolt with a hexagonal socket in its head that is designed to be used with an Allen wrench
The Allen bolt is integral to the crank and remains in it when the crank is removed from the spindle.—Eugene A. Sloane, Sloane's New Bicycle Maintenance Manual, 1981

Word History

Etymology

Allen Manufacturing Co., Hartford, Connecticut

First Known Use

1972, in the meaning defined above

Time Traveler
The first known use of Allen bolt was in 1972

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Dictionary Entries Near Allen bolt

allenarly

Allen bolt

Allenby

See More Nearby Entries 

Cite this Entry

“Allen bolt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Allen%20bolt. Accessed 29 Nov. 2024.

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