cujo8,
If you want original style (thread and grade) bolts (or stainless replacements, where safe),
The Nutty Company has as good a selection as anyone:
Totally Stainless has a good selection of fine-theaded bolts/screws and a wide variety of cap styles (no clutch-head, though). If you are interested in stainless, read their page on "About Stainless Steel).
Tim