Storm Window replacement hardware

A professional from Rhode Island says:
October 12, 2021
Have a few storm window/screens requiring replacement parts.
Can you identify or suggest replacement parts from attached? or, should this part have number stamped on other side which may help.
Any help would be greatly appreciated.
Thumbnail of the uploaded file named corner spring latch 1.jpg
Thumbnail of the uploaded file named corner spring latch 2.jpg
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Bob from SWISCO responded:
October 18, 2021

Start by comparing these slide bolts to our 91-176. They look similar, but you'll need to remove your old ones from the window and compare all the dimensions to see if they match up. 
3/16" x 1-1/4" Spring
3/16" x 1-1/4" Spring
26-016
$0.31
Corner Latch Set, 1/4" x 1/4"
Corner Latch Set, 1/4" x 1/4"
91-176
$10.42
How to install a window screen latch
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