I am looking to purchase an assortment of small (2mm) screws of different lengths. Searching your site, I keep getting "no such item" response?
You might do better ordering from a online site. There are others. This site has been very good for me. You do not need a large variety of screws, at least I do not.
I sometimes re-tap for a near SAE size. Depends on the model.
Bachmann is not into general stock supply.
https://www.micromark.com/hobby-supplies/hardware
Rich
These folks have a good selection of metric screws, including 2mm.
http://www.microfasteners.com/home.php?cat=735
Len