That looks like an AB cable to me and those ends are not very strong as there is very little material holding the end in place.
I did think about these a while ago when asked the question with regards to the ends but did not take it very far and you have just rekindled my thoughts.
Which were to replace the end with a rod end, as shown below
DSCF0250.JPG
These are what I use on the stainless steel cable and are far stronger than the cables themselves so you'll not break the end
It would mean tapping the rod M6 x 1 for 20mm and care will need to be taked to not mark the rod while you hold it, a bit couple of bits of aluminium in the vice should work but you will also need to make sure you do not cut the thread "drunk".
Can sort out a rod end modified to fit as they are in standard form threaded M8 if you want to give it a try let me know.
Bob
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