Parts That Can Collide Clip Through Each Other

I am trying to make a carabiner stay connected to a line/cord.

The parts, despite both being able to collide, will clip through each other if enough force is applied. This happens with some other builds I do
https://gyazo.com/13f243eecf10a955c38f02fb2da3c9c0

I have tried resizing different parts, and they still clip through each other.

Is there any way to prevent this from happening? I would like it to stay attached indefinitely unless a specific even happens, which I scripted already and that works.

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