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Square keys, inch (ANSI B17.1): 3/32 to 1/2 in
What key goes on a 1 inch shaft? · Standard part · basis: ANSI B17.1 keys and keyseats: square key size by shaft diameter; keyseat depth k/2
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 7 in table
Notes
- Square ends (bar stock keys).
Sizes
| shaft_in | key_in | lengths_in |
|---|---|---|
| 0.3125–0.4375 | 0.0938 | 0.75, 1, 1.5, 2, 3 |
| 0.4375–0.5625 | 0.125 | 0.75, 1, 1.5, 2, 3 |
| 0.5625–0.875 | 0.1875 | 0.75, 1, 1.5, 2, 3 |
| 0.875–1.25 | 0.25 | 0.75, 1, 1.5, 2, 3 |
| 1.25–1.375 | 0.3125 | 0.75, 1, 1.5, 2, 3 |
| 1.375–1.75 | 0.375 | 0.75, 1, 1.5, 2, 3 |
| 1.75–2.25 | 0.5 | 0.75, 1, 1.5, 2, 3 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| ASME | ANSI B17.1 Keys and keyseats | standard | ASME; dimensions are facts verify |
Free files
★ Free files 35 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| square-key-6-64in-x0.75in | 0.09375 in square key × 0.75 in, for shafts over 0.3125 up to 0.4375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-6-64in-x1in | 0.09375 in square key × 1 in, for shafts over 0.3125 up to 0.4375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-6-64in-x1.5in | 0.09375 in square key × 1.5 in, for shafts over 0.3125 up to 0.4375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-6-64in-x2in | 0.09375 in square key × 2 in, for shafts over 0.3125 up to 0.4375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-6-64in-x3in | 0.09375 in square key × 3 in, for shafts over 0.3125 up to 0.4375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-8-64in-x0.75in | 0.125 in square key × 0.75 in, for shafts over 0.4375 up to 0.5625 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-8-64in-x1in | 0.125 in square key × 1 in, for shafts over 0.4375 up to 0.5625 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-8-64in-x1.5in | 0.125 in square key × 1.5 in, for shafts over 0.4375 up to 0.5625 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-8-64in-x2in | 0.125 in square key × 2 in, for shafts over 0.4375 up to 0.5625 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-8-64in-x3in | 0.125 in square key × 3 in, for shafts over 0.4375 up to 0.5625 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-12-64in-x0.75in | 0.1875 in square key × 0.75 in, for shafts over 0.5625 up to 0.875 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-12-64in-x1in | 0.1875 in square key × 1 in, for shafts over 0.5625 up to 0.875 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-12-64in-x1.5in | 0.1875 in square key × 1.5 in, for shafts over 0.5625 up to 0.875 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-12-64in-x2in | 0.1875 in square key × 2 in, for shafts over 0.5625 up to 0.875 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-12-64in-x3in | 0.1875 in square key × 3 in, for shafts over 0.5625 up to 0.875 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-16-64in-x0.75in | 0.25 in square key × 0.75 in, for shafts over 0.875 up to 1.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-16-64in-x1in | 0.25 in square key × 1 in, for shafts over 0.875 up to 1.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-16-64in-x1.5in | 0.25 in square key × 1.5 in, for shafts over 0.875 up to 1.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-16-64in-x2in | 0.25 in square key × 2 in, for shafts over 0.875 up to 1.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-16-64in-x3in | 0.25 in square key × 3 in, for shafts over 0.875 up to 1.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-20-64in-x0.75in | 0.3125 in square key × 0.75 in, for shafts over 1.25 up to 1.375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-20-64in-x1in | 0.3125 in square key × 1 in, for shafts over 1.25 up to 1.375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-20-64in-x1.5in | 0.3125 in square key × 1.5 in, for shafts over 1.25 up to 1.375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-20-64in-x2in | 0.3125 in square key × 2 in, for shafts over 1.25 up to 1.375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-20-64in-x3in | 0.3125 in square key × 3 in, for shafts over 1.25 up to 1.375 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-24-64in-x0.75in | 0.375 in square key × 0.75 in, for shafts over 1.375 up to 1.75 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-24-64in-x1in | 0.375 in square key × 1 in, for shafts over 1.375 up to 1.75 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-24-64in-x1.5in | 0.375 in square key × 1.5 in, for shafts over 1.375 up to 1.75 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-24-64in-x2in | 0.375 in square key × 2 in, for shafts over 1.375 up to 1.75 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-24-64in-x3in | 0.375 in square key × 3 in, for shafts over 1.375 up to 1.75 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-32-64in-x0.75in | 0.5 in square key × 0.75 in, for shafts over 1.75 up to 2.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-32-64in-x1in | 0.5 in square key × 1 in, for shafts over 1.75 up to 2.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-32-64in-x1.5in | 0.5 in square key × 1.5 in, for shafts over 1.75 up to 2.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-32-64in-x2in | 0.5 in square key × 2 in, for shafts over 1.75 up to 2.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
| square-key-32-64in-x3in | 0.5 in square key × 3 in, for shafts over 1.75 up to 2.25 in (keyway depth k/2 in shaft and hub) | STEP · STL |
Let your AI pull this. Add
Set it up →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.Plain text: sheet.txt · JSON: /api/geometry?object=square-keys-inch
Fits with
Questions
Key for a 1 in shaft?
1/4 in square.