Quantity   Component name
1 × M5x0.8x 60-80 mm screw An M5 screw that's about 60-80 mm long
1 × compression spring about 15 mm long and 8-10 mm diameter,, not too stiff
1 × M4x0.7mm nut
1 × 5mm thick PTFE fixed nut drill an undersized hole and let the M5 screw roll it's threads into the plastic.
2 × small plastic anchor screws small wood screws work OK, too
1 × a few printed parts I used ABS filament