I had a hanging swing/chair from Ikea with this sort of a hanging mechanism.
Looks like a regular death trapI take it as an answer - Yes
I would call it a fitting (though Ikea instructions gives only images, without names of the parts).
And it can be found in many products, this one belongs to a swing from Ekorre line.
Numbers instructs the sequence how the rope should go.
This exact one in use:
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