Part info
- What: ringbolt
- Material: stiff
- Measures: M4, 10mm thread
- Hole: 6,3mm

Tolerance
- Size: Thickness set to M4 (4mm), length is standard tolerance (+/- 15mm)
- Material: Standard tolerance
Get the part
- Buy: Readily available in stores, search for: “M4 ring bolt 10mm” (german: Ösenschraube)
- Make: No instructions
Introduced by
- Designer: Lars Zimmermann; via MF Backpack
- initial post, initial post backup.pdf
- Open: This part was bought off the shelf. It is probably prior art. For high volume commercial use though check the legal status though (and let us know please)
Download Portal
Most parts have open design and manufacturing files you can download and work with.

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021.3 – Disk ⌀ ~75mm, 6mm holes
101.2 – Bead ⌀ ~16mm, ⌀ 6mm hole
131.1 – “Long flap” board ~750x50x16mm
046.1 – M3 set screw 16mm
030.1 – M6 bolt ~30mm
109.1 – Board 480x360mm
101.1 – Bead ⌀ ~16mm, ⌀ 4mm hole
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