Dimensions:
Hole: 6mm Ø
Height: 60mm
base: 40mm Ø
Bottom:
The bottom is intended to be glued on the underside of the legs, so that you can attach furniture pads underneath.
Assembly:
I used screws from an old IKEA-set (Part 100349), but you should be fine to use any screw of about 6mm width with a head more than 7,5mm wide.
The author marked this model as their own original creation.