question on storm window latch part

A quick learner from minneapolis mn says:
Does the part number 91-003M spring fit into part 91-001 latch ? If not which one does the spring fit in? The old part I have looks like where the spring goes in is deeper than the part you have..
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Tom from SWISCO responded:
Hello! Yes, the 91-003M and 91-002 are compatible.
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