Xem Studiomeasured geometry

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Tommy bar Ø6 × 80

What is a tommy bar? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: tommy bar, capstan bar, barra de maniobra, Knebel

Exact dimensions. True size, with no printing tolerance added.

length
80.0 mm
width
6.0 mm
height
6.0 mm

Notes

  • Plain Ø6 × 80 mm rod that goes through the screw head's cross hole to turn it.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Tommy bar Ø6 × 80 size chart

dimensionvalue
rodØ6 × 80 mm

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 389: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

tommy-bar-6x80bar along X, centredSTEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
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Plain text: sheet.txt · JSON: /api/geometry?object=tommy-bar-6x80

Tommy bar Ø6 × 80, isometric render of a generated part
Render of tommy-bar-6x80 from the free STEP; not to scale.

Fits with

Screw jack, Tr16×4 (4 mm lift per turn), isometric render of a generated part
Screw jack, Tr16×4 (4 mm lift per turn)4 sizes★ 1 file

Questions

What is a tommy bar?

Plain Ø6 × 80 mm rod that goes through the screw head's cross hole to turn it.