December 12, 2020
The part number is 8590, but the mfr of window is unknown. These are top, bottom and side views. The latch goes in the top of the vinyl sash frame to hold the sash in the track. An intact latch would have a tongue extending an inch or so beyond the housing. This one is broken off at the end of the latch housing. Notable feature is the notch between the face and body of the latch seen at the bottom of the side view, This notch is what holds the latch in the sash frame. The protrusion of the body of the latch is below a 1/16" cross-piece at the end of the sash frame.
