tommy bar

noun

A short bar put through the hole in a socket spanner or box spanner to provide leverage.

“A set of two tommy bars is the standard tooling for the spindle nose threads of some minilathes and minimills.”

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Meanings

nountommy bar (plural tommy bars)

plural tommy bars

  1. A cylindrical iron or steel bar used as a lever.
    1. engineeringA short bar put through the hole in a socket spanner or box spanner to provide leverage.

      Synonyms: tommy

    2. engineeringA bar used to loosen or tighten some types of chucks and tool holders on machine tools such as lathes or milling machines.

      A set of two tommy bars is the standard tooling for the spindle nose threads of some minilathes and minimills.

      Synonyms: tommy

Synonyms & antonyms

nounA short bar put through the hole in a socket spanner or box spanner to provide leverage.

Similar
tommy

nounA bar used to loosen or tighten some types of chucks and tool holders on machine tools such as lathes or milling machines.

Similar
tommy

Translations

Dutch kruk
  • krukshort bar
Greek αξονίσκος
  • αξονίσκος (axonískos)short bar
Cite this entry
APA

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

MLA

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

Chicago

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

Source: tommy bar on Wiktionary, CC BY-SA 4.0.