Crank arm for awning window

A quick learner from Angola, NY says:
I got the replacement crank arm today and I can't see any way this part will fit. The part is 39-264 was supposed to be the replacement for the awning window. My operator has a few part numbers.C9400-1 on the top, F9400-8B on the bottom and 1521101 on the arm. The arm is 9" from the center of the operator to the 8-32 threaded hole at the end of the arm.If this is not the right part, can I exchange it or get a refund if you dont have the part. I ordered this part because one of your reps said that this was the right one.I included some pictures if they come out.
User submitted photo of Andersen crank operator.
Profile picture of Mike
Mike from SWISCO responded:
Please take a look at the 39-099 Andersen Operator, which is used for awning windows.

The 39-264 is used for a casement window.
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