Need a longer self adjusting screw for a spring roller

A handy person from Upstate New York says:
I have a sliding screen door that has the spring tension rollers that look like the one you sell (Product Code: 84-031). I need some self adjusting screws for the spring tension rollers (the existing screw looks like the one you sell, Product code: 84-502). The problem is that the screw that I have is 1.5" long, but the ones you sell are only 1" long.

1. Do you think that a 1" long screw will be adequate?

2. Do you have the same type of screw in a 1.5" length?

Thank you.
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Dave Sr. from SWISCO responded:
We just added a 1-5/8" Adjustment screw online for you, take a look at SWISCO product code 84-506.
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