Idle screw (dealer wants $15 !!!)

[Vangelis Tozakoglou <evangelo@mecf.wustl.edu>]

Hi everybody,
somehow I managed to lose my idle screw .... I didn't mesh with it, it just
jumped out
of the vehicle on the highway ...
I called my beloved dealer and he wants $15 for it !.
Is it a special screw ? Blessed from the fatherland or something ?
Can I find it in a local hardware store ? Can anyone give me a discription
of it ?

TIA
Vangelis
5000 CS T '86, no idle screw ... just duct tape ...