need help: screw is too short when I added the SSD Heatsink on

When Would I Use an M2 Screw? m2 slot screw In this video I go over a quick tip on how to avoid loosing your screw Most times when m2 sata vs nvme slot 2 heatsink screws for my X570 Crosshair VIII Dark Hero They're the long black ones, for the slot farther from the CPU Where can I get them, please

m2 vs nvme slot 2 heatsink screws for my X570 Crosshair VIII Dark Hero They're the long black ones, for the slot farther from the CPU Where can I get them, please