My motherboard has 2 M.2 NVME slots but only comes with one screw because the manufacturer somehow decided it made sense. They work great as intended and I now have a few extras if I need them. They don't seem to be easy to find in brick-and-mortar stores or other online stores (in my personal experience). I found them here, got them quickly, and got them when I needed them to complete the build.
Glarks 660 Pieces Phillips Assortment Motherboard
10 Review
36-Pack Black Rubber PC CPU/Case Fan Screws/Rivets Set for Computer
11 Review
M.2 Screw Kit: Easy Mounting for NVMe SSDs on ASUS Motherboards
19 Review
uxcell 3.5" HDD Screw Black 200pcs for Computer PC Case - Flat Phillips Head - 6#-32 - Hard Drive Fasteners
10 Review
π UCTRONICS GPIO Breakout Kit for Raspberry Pi Pico - Assembled Pi T-Type Breakout + 830 Tie Points Solderless Breadboard + 40 Pin Male-Female-Male Rainbow Ribbon Cable + 65pcs Premium Jump Wires
10 Review
DSD TECH 2 PCS IIC OLED Display 0.91 Inch: Perfect Arduino ARM Accessory
9 Review
Neural Compute Stick 2 by Intel
12 Review
Complete Kuman Raspberry Pi 4B 3B+ Kit: Breadboard, Expansion Board, Jumper Cables, Ribbon Cable, Resistance Pack
9 Review