Nylon (?) part for awning window

Question

We recently purchased an older(1975)condo in Florida. It has a "Florida room" attached with aluminum crank out awning windows. Most of the nylon parts are broken or brittle and need to be replaced. Can you tell from the attached photo what they are? Thank you for any help you can provide.

Tom · Accepted Answer

I'm afraid I cannot tell what you have from this photo. I'm somewhat reminded of parts like our 39-537, 39-538, or even our 39-539, but I can't be sure. Look them over and see what you think.