Need a longer self adjusting screw for a spring roller

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.