I have not removed the pin from the window sash so am not sure of it's length. The window is in a vacation home so I did not want to take it apart unless necessary. We will be there later this week so let me know if you need more details to identify the part.
Also, the piece that fits across the bottom of the sash has some minor damage so I may replace it, too, if you have a replacement for it. You can see the end that has broken loose from the sash frame in one of the photos.
Thanks,
MikeĀ