Window lock

A quick learner from Solon OH says:
I am looking for the window lock similar to the one in the attached. Could you please let me know if the acorn 90-139 matches the one I have? Also, do I need to purchase the lock keeper that shows up under suggested items when I look for acorn 90-139 ? Are there any screws that's needed to keep the lock in place?
Thumbnail of the uploaded file named A3109756-7371-4E64-A15F-D56D21C79971.jpeg
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Dave Sr. from SWISCO responded:

Looking at your photo, I am also inclined to agree with your recommendation of the 90-139 acorn lock bolt. You would only need to replace your keeper if it happens to be broken. You can reuse your original mounting hardware. I think you are completely fine and ready to go. 

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