Greg, the model car guys use very small screws. You can search that large online auction house for Pocher. There's a guy in the UK that sells screws for Pocher model builders, but he doesn't seem to have any listed right now. Apart from that I found this here

[link=http://cgi.ebay.com/Nickel-Plated-Brass-Simulated-Hex-Bolt-Pocher-Models-/370426795940?pt=LH_DefaultDomain_0&hash=item563f28 57a4]nickel plated hex bolts[/link]