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.

More Parts
113.1 – Hinge 1, ⌀ 6mm holes
099.1 – wheel, M6 thread
006.1 – Wire 500 mm long, 2mm thick
100.1 – Eurobox 400x300x270 mm
061.1 – Bendable plate ~60x60mm
016.1 – Half pipe 90mm, inner ⌀ 152mm
108.1 – Beam ~660x30x30mm
129.7 – Rod, M6 insert threads, 690mm, ⌀ ~50mm
Play ↻
Do you have any new ideas on how to use these parts? Share it.