I need one of these, window crank arm

A home owner says:
This arm connects to the crank arm with a slot screw. I've seen other connectors but they slip onto a stud. Is there one that works with this set up? Part in question is circled. This is a Roto Casement window. Thanks
User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thank you for posting. I'm afraid that this operator is no longer available. There is one possible solution to consider, but I am not sure it will work for you. Start by looking at our 39-091 operator. You may be able to retro-fit this to your window, however you will also need our 39-522, 39-224 and you maybe the 39-557 spacer. Please keep in mind that I cannot guarantee this hardware will work, but it's the only possible substitution we've been able to come up with.
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