i'm making a board (pcb) for the 8051 and it needs to be a little high (0.5cm or 1cm) i'm thinking of using some screws like the ones in the 4 corners of:

http://www.8052.com/news.phtml?NEWSID=34

what do the experts use? do they use screws, plastic or something else?

i also would like to amortize the impact when placing in a table or something and i thought in plastic perhaps you know where to get something like a screw-made-of-plastic.

thanks for your time