Storm Window Corner Key

A quick learner from New York says:
December 15, 2023
The tilt keys are marked 1350. The lower keys (no tilt pin) are marked 1349
I have found several keys that are 5/32 thick but none with a 5/32 thick leg and a 3/32 leg.
Do I need to get some 5/32 keys and mill one leg down to 3/32?
Other suggestions?
Thank you!
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Dave Sr. from SWISCO responded:
December 19, 2023

Years ago when we started in this business storm windows were the rage and homeowners were removing their old wooden storms for the new aluminum triple track. However, today homeowners are going with the vinyl replacement windows so hardware like this is getting harder and harder to match. With that said, take a look at the 95-015 and the 95-016 corner keys. I would suggest trying to see if you can "mill" down the one leg to fit your storm pane like you mentioned. Also, take a look at the 95-244 to see if these offset corners could be used. Look over the specifications along with the related videos and see what you think. 
Window Tilt Corner, 3/16" x 5/32"
Window Tilt Corner, 3/16" x 5/32"
95-015
$1.97
Offset Corner Pair
Offset Corner Pair
95-244
$2.27
Stamped Storm Window Corner
Stamped Storm Window Corner
95-016
$0.52
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