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Arduino UNO R4 WiFi (ABX00087): board outline, mounting holes and header rows
What are the Arduino UNO R4 WiFi board dimensions and mounting-hole positions? · Modern device · basis: Arduino UNO R4 WiFi datasheet ABX00087, section 13 'Mounting Holes And Board Outline' (page 19).
Also called: Arduino UNO R4 WiFi, ABX00087, UNO R4 WiFi, Arduino R4 WiFi dimensions, UNO R4 mounting holes, Arduino UNO Rev4 WiFi
Exact dimensions. Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part. Mating features
- length
- 68.58 mm
- width
- 53.34 mm
- height
- 10.1 mm
Notes
- Datum for the table: board corner at the USB-C edge and power/analog header edge (x along the long side, y across). Board 68.58 × 53.34 × 1.6.
- Outline: main right edge at 66.04 with a 2.54 tab to 68.58 between y 5.08 and 38.10, joined by 45° chamfers (standard UNO shape).
- Four Ø3.2 holes in the standard UNO pattern (table), the same positions as the UNO R3.
- Header rows 8.5 tall above the board, 2.5 deep, 1.3 in from the long edges: digital row x 17.29 to 65.02, power/analog row x 26.42 to 65.02.
- Not modelled: USB-C (its top edge 11.01 below the digital-header edge, 3 tall), DC barrel jack, Qwiic connector, ICSP header, ESP32-S3 module and LED matrix; leave clearance for them.
- Dimensions are exact nominal (true size), no tolerance added.
Arduino UNO R4 WiFi (ABX00087): board outline, mounting holes and… size chart
| hole | x (mm) | y (mm) | Ø (mm) |
|---|---|---|---|
| 1 | 13.97 | 2.54 | 3.2 |
| 2 | 15.24 | 50.80 | 3.2 |
| 3 | 66.04 | 7.62 | 3.2 |
| 4 | 66.04 | 35.56 | 3.2 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance (tolerances by process); leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| mounting holes | 4 × Ø3.2, UNO pattern | M3 standoffs or screws | designed | all |
| header rows | 2.54 pitch female headers | Arduino shield pins | socket | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Arduino | UNO R4 WiFi datasheet (ABX00087) | web | Publisher's page; dimensions are facts |
| Arduino | UNO R4 WiFi documentation | web | Publisher'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
| arduino-uno-r4-wifi | Arduino UNO R4 WiFi (ABX00087): board outline, mounting holes and header rows | STEP · STL |
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=arduino-uno-r4-wifi

Fits with





Questions
How big is the Arduino UNO R4 WiFi?
68.58 × 53.34 mm, the same outline as the UNO R3; 10.1 mm tall at the headers.
Does the UNO R4 WiFi fit UNO R3 cases?
The outline and the four Ø3.2 mm holes match the UNO R3; the USB-C port replaces USB-B, so the port opening differs.