Specifications for Otto Bock compatible / MSM 0.1rev wrists:
The terminal devices should have a 12 x 1.5 mm thread (Gewinde).
The bolt that we'd fit over the screw is to make it compatible with current follow-on adapters that we use. It's a regular Otto Bock bolt with sub 16.00 mm diameter, such as 15.99 mm or thereabouts.
3. Crown / cylinder adapter
For our own wrist series, we use fitting adapters that fix to the Otto Bock 16 mm diameter specification regardless of the degree of sloppy manufacturing (after all one of my bolts is only 15.88 mm and we also beat that one into wigglefree submission).
4. Cable connection
There should be a steel cable. We then clamp on the little metal piece that provides the interface to the cable lock.
Length from wrist backwards: optimally the cable should be at least 8 cm long.
Diameter: it should have a 1 mm diameter.
The crown adapter is screwed on top of an Otto Bock bolt.
Bottom up view:
One day all devices will be compatible.