This rubber nipple by Delock can be used to fix M.2 SSDs on a PCB. M.2 slots have holes to fix the modules, the rubber nipple will be inserted into these holes to fix them. No tools are required for this type of mounting.
Specification• Dimensions (LxWxH): ca. 8.00 x 7.35 x 4.97 mm
• Mounting hole diameter: ca. 3.5 mm
• 10 x rubber nipple