Allen key

/ˈælən kiː/

noun

Synonym of hex head wrench.

Similar
hex head wrenchAllen wrenchzeta keyUnbrako keyInbus keyzeta wrenchhex keyUnbrako wrench
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Meanings

nounAllen key (plural Allen keys)

plural Allen keys

  1. Synonym of hex head wrench.

    Synonyms: hex head wrench

Synonyms & antonyms

nounSynonym of hex head wrench.

Similar
hex head wrench

More synonyms by meaning

nouna wrench for Allen screws

Similar
Allen wrenchzeta keyUnbrako keyInbus keyzeta wrenchhex keyUnbrako wrenchInbus wrench
Broader
wrenchspanner
Also see
allen wrenchhex head wrenchhex key

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

Allen + key, from the name of the Allen Manufacturing Company.

Full word history & related roots →

Translations

Arabic مِفْتَاح سُدَاسِيّ
  • مِفْتَاح سُدَاسِيّ (miftāḥ sudāsiyy)a hex head wrench
Chinese Cantonese 六角匙
  • 六角匙 (luk⁶ gok³ si⁴)a hex head wrench
Chinese Mandarin 內六角扳手 /内六角扳手
  • 內六角扳手 /内六角扳手 (nèi liùjiǎo bānshǒu)a hex head wrench
Czech imbusový klíč
  • imbusový klíča hex head wrench
Danish unbrakonøgle
  • unbrakonøglea hex head wrench
Dutch inbussleutel
  • inbussleutela hex head wrench
Finnish kuusiokoloavain, kuusikulma-avain
  • kuusiokoloavaina hex head wrench
  • kuusikulma-avaina hex head wrench
French clé Allen, clef Allen
  • clé Allena hex head wrench
  • clef Allena hex head wrench
German Innensechskantschlüssel, Inbusschlüssel
  • Innensechskantschlüssela hex head wrench
  • Inbusschlüssela hex head wrench
Hungarian imbuszkulcs
  • imbuszkulcsa hex head wrench
Italian brugola
  • brugolaa hex head wrench
Japanese 六角棒スパナ
  • 六角棒スパナ (rokkakubō supana)a hex head wrench
Korean 육각렌치
  • 육각렌치 (yukgangnenchi)a hex head wrench
Norwegian Bokmål unbrakonøkkel
  • unbrakonøkkela hex head wrench
Polish klucz imbusowy
  • klucz imbusowya hex head wrench
Portuguese chave Allen, chave sextavada
  • chave Allena hex head wrench
  • chave sextavadaa hex head wrench
Romanian inbus
  • inbusa hex head wrench
Russian шестигра́нный ключ, и́нбусовый ключ
  • шестигра́нный ключ (šestigránnyj ključ)a hex head wrench
  • и́нбусовый ключ (ínbusovyj ključ)a hex head wrench
  • и́нбус (ínbus)a hex head wrench
Spanish llave allen, llave Allen
  • llave allena hex head wrench
  • llave Allena hex head wrench
Swedish insexnyckel
  • insexnyckela hex head wrench
Turkish alyan, alyan anahtarı
  • alyana hex head wrench
  • alyan anahtarıa hex head wrench
Cite this entry
APA

Allen key. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Allen%20key

MLA

“Allen key.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Allen%20key. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Allen key,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Allen%20key.

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