Searching for Simonton 508042

A quick learner says:
I have 16 sets of Simonton casement windows that were installed 4 December 1995. All of windows are suffering from differing states of deterioration. A label on some windows says,"508042/02   23.6250   72.7500   CMRK   J0049". Do you have this item available as well as the tiny screws to attach the hardware?
Thumbnail of the uploaded file named Window Crank Detail from Above.jpg
Thumbnail of the uploaded file named Interior Crank Detail.jpg
Thumbnail of the uploaded file named underside crank attachment.jpg
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Tom from SWISCO responded:

Your operators look similar to our 39-187 and 39-188. I think these parts may be what you want, but look them over and see if you agree.

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