I took a look at the carriers I replaced recently. I don't have the parts you're looking for. I do have what appears to be #16 on the diagram = a screw and a plastic sleeve/washer, in case you want that.

In cases like this, I would find the closest sized nut + bolt I can get, and then use a grinding wheel or Dremel tool on it until it is just right. I know it takes time, but I find myself doing this a lot to get myself out of these sorts of situations.

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2001 X5 3.0i, 203k miles, AT, owned since 2014