NEMA 17 stepper motor
What are the NEMA 17 mounting dimensions? · Standard part · basis: NEMA ICS 16 frame standard; common vendor values
- width
- 42.3 mm
- height
- 42.3 mm
- holes
- 4 × Ø3.0 mm · 31 x 31 · M3
Notes
- Face 42.3 × 42.3 mm; four M3 holes on a 31.0 × 31.0 mm pattern; Ø22 mm pilot boss, 2 mm tall; Ø5 mm shaft with a D-flat, typically 20–24 mm long.
- Body length varies by torque (20–60 mm); the face and hole pattern don't.
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Stepper motor (NEMA frame sizes) | web | CC BY-SA 4.0 (text) |
Xem scan
Not needed Published standard; the sheet is the geometry.
Plain text: sheet.txt · JSON: /api/geometry?object=nema-17-stepper
Questions
What is the NEMA 17 mounting hole pattern?
Four M3 holes on a 31.0 × 31.0 mm square, 42.3 mm face, Ø22 mm pilot boss 2 mm tall.
What is the NEMA 17 shaft diameter?
5 mm with a D-flat, usually 20–24 mm long. Body length 20–60 mm depending on torque; the face never changes.

