Allen bolt

/ˈælən ˈboʊlt/

noun

A bolt whose head has a hexagonal socket.

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Meanings

nounAllen bolt (plural Allen bolts)

plural Allen bolts

  1. A bolt whose head has a hexagonal socket.

Synonyms & antonyms

Also see
allen screw

Origin

From Allen, the name of Allen Manufacturing Company, and bolt.

Full word history & related roots →
Cite this entry
APA

Allen bolt. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Allen%20bolt

MLA

“Allen bolt.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Allen%20bolt. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “Allen bolt,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Allen%20bolt.

Source: Allen bolt on Wiktionary, CC BY-SA 4.0.