Hook catch or lock mechanism J shape

Hello,

I have some windows that are a crank out style with 2 or 3 window panels, alumni frame. Panels are about one foot tall x about 3 foot wide. There are catch or lock mechanisms on the sides that when closed seem to prevent the panels from being pulled open from the outside.

The pieces are about 2 inches long and kind of look like a J letter hook.

Some are broken on the straighter part. They seem to cause a problem with getting the windows to open and close. I have lubricated the hardware. Pretty sure they are the culprits.

Do you know what that part is called?

Do you carry it?

How much?

Thank you,

Jeff