Basic Info
- What is it: M4 Ringbolt ~40mm
- Material: strong
- Dimensions: ~40mm long, hole in ring at least ⌀ 4mm



Tolerance
- Size: standard tolerance
- Material: standard tolerance
Get the part
- Buy: available as local make plus readily available in stores, search for “M4 ringbolt 40mm”
- Make: no instructions available
Meta
- Introduced by: Lars Zimmermann via Climate Change Survival Fortune Angels
- Original post, original post backup.pdf
- Open: Off the shelf part. Most likely prior art, unless you get a very special version.
- Disclaimer
Download Portal
Most parts have open design and manufacturing files you can download and work with.
0P3N Portal
More Parts
048.2 – Tube 60mm ⌀152mm
101.3 – Flexible bead ⌀ ~16mm, ⌀ 2mm hole
115.1 – 2 corner bracket, M6, 15mm to edge
017.1 – Tube 240mm long, ⌀ 10mm
101.1 – Bead ⌀ ~16mm, ⌀ 4mm hole
088.1 – M6 wing nut
030.1 – M6 bolt ~30mm
026.1 – Branch
120.1 – Rail ~300mm
125.3 – Foam small 400x200x50mm
121.1 – board ~420x360mm
001.2 – Rod 210mm, ⌀ 16mm
Pl⚲y (ノ✿◠‿◠)ノ .-‘ °
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