Long crank pins

[Russ Bellinis]

If I'm understanding your request correctly you are looking for longer versions of small screws that we normally use in modeling? If you have a hobby shop nearby, do they carry Hobbits? They have screws available in various lengths in sizes 2-56, 1-72, and 0-92. Would those work? You might also try the following site:
<!-- m --><a class="postlink" href="http://www.microfasteners.com">http://www.microfasteners.com</a><!-- m -->

I think the problem with Micro Fasteners is that you probably can't order just a couple of screws.