Window sash spring connector

A handy person from Rossmoor says:
This is a good connector with spring attached. Do not know type of window. They are 20 to 22 tears old. Can find no markings on windows. Double hung and they swing in for cleaning.
User submitted a photo of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
Good morning, and thank you for posting. I recommend that you look at our 15-104 Caradco Friction Shoe. Does this look like a possible replacement? Let me know what you think.
A quick learner says:
That looks like it could be it. Thanks so much.
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