Easy way to mount PCB's in an enclosure without having to worry about measuring out the precise distances on the board and modelling the enclosure to match the board. 

I made these for m3 inserts that are 5x5mm in outer dimensions, the inserts can be pressed into place without any heat and then a little super glue can be added around the edges to prevent them from moving while tightening the screws.

The height is 8mm and the diameters are 7mm at the top and 15mm at the base

Attach all feet to the PCB and glue it into the enclosure with a dab of super glue on each foot.