Aluminum Storm Window spring latch

A contractor from Massachusetts says:
February 6, 2023
These windows were manufactured by Harvey Industries in Massachusetts about 30 years ago. Im trying to locate the spring latches - they seem to have a small screw on the bottom of the Fram that holds the frame together.

Thanks - Peter
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Tom from SWISCO responded:
February 7, 2023

Hello,

Storm windows aren't as popular as they once were, so these latches are getting harder and harder to come by. There's a good chance your part is no longer made.

Our closest replacement options would be the 91-176 latch set or 91-004 and 91-005. We can't guarantee that either would work but review the specifications shown on our product pages and see what you think. Thanks for posting. 
A contractor from Massachusetts says:
February 12, 2023
Thank you Tom.
Corner Latch Set, 1/4" x 1/4"
Corner Latch Set, 1/4" x 1/4"
91-176
$10.42
Corner Latch, LH
Corner Latch, LH
91-004
$8.70
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