tommy bar

English

T-handle wrench with integral tommy bar as the handle; the grooves in the bar serve the ball detent to keep the bar in place. A socket and extension are attached.

Noun

tommy bar (plural tommy bars)

1. (engineering, machining) A cylindrical iron or steel bar used as a lever; thus:
   1. A short bar put through the hole in a socket spanner or box spanner to provide leverage.
   2. A 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.

Translations

short bar

• Dutch: kruk (nl) m
• Greek: αξονίσκος m (axonískos)

See also

• (tool containing an integral tommy bar): T-handle
• (tool involving an analogous male cylindrical portion): pin spanner
• (hooked bars, differentiated from tommy bars): crowbar, prybar, jimmy

Further reading

• Wrench on Wikipedia.Wikipedia