Dave Sr. from SWISCO responded:
July 17, 2017
I'm afraid the 39-336 will likely not fit your Andersen operator. Andersen operators have a stem spline closer to 3/8", while the 39-336 is made for smaller splines at 11/32". I would suggest contacting a genuine Andersen dealer in your area to see what they can come up with to operate the window. I'm not sure if any similar eyelet adapter exists in this size, to be honest.
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