Harvey window screen - lock to attach screen to window

A quick learner from Massachussets says:
Need some replacement screen locks for 1990's Harvey window screens. Attached picture shows what they look like.
User submitted a photo of a knife latch.
Profile picture of Paul
Paul from SWISCO responded:
I'm not sure what this is. Is this picture stretched or compressed in any way? Could our 70-143P work for you? Compare its dimensions to your own and see how well they line up.
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