Need mounting screws

Good Morning, I recently purchased two of the 81-005 rollers to replace on my patio door. However there was no mounting screws included with the replacement rollers. I had already taken my patio door apart and destroyed the orginal screws that held the original rollers. Do you carry the mounting screws for these rollers? I have not been able to find the correct size screw needed in any of the hardware stores near me. If you do not carry these screws could you provide me with the actual size of the screws so I may order them for a specialty co? Your help is greatly appreciated.