Window Stop Black Screw on

Hello,

Your photo resembles a type of top sash guide, but they don't usually install from the top as shown in your photo. If you could remove an intact guide from the window and show us the part from additional angles, that would help us determine if a possible replacement is available. Thank you! 

Thanks for getting back to us. We are not familiar with this particular guide but we are currently checking with our suppliers to see if a possible replacement is available. We'll follow up with you as soon as more information is available. 

We appreciate your patience as we looked into this for you. Unfortunately, we were not able to locate a replacement for this guide through any of our suppliers. I'm sorry we won't be able to assist with this repair, but please let us know if you have any other hardware questions.