Truth Window Crank

A contractor from Albuquerque New Mexico says:
I have attached photos of some window cranks that I need from what I can see is the part number is 30744B.
Thumbnail of the uploaded file named Truth Window Crank Part Number.jpg
Thumbnail of the uploaded file named Truth Window Crank.jpg
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Dave Sr. from SWISCO responded:

Take a look at the operator 39-187. I believe this is the operator you are looking for. However, let me clarify something: is your operator worn down, or has the mounting screw come away from the frame? Maybe you just need to reinstall the mounting screw. if that's the case, see our 33-083.

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