Thanks for the help guys!
Turns out the local chain hardware store had them. Yoink!
Couldn't find the rare .7 metric size for my adjustable stem (which is why I went looking in the first place...clamp bolts are already stripped) but...ya know what...stems a piece of crap anyways. Wobbles all over. I'm going Nitto Technomic ASAP once I figure out my optimum angle/height.
Oh right (back out of gear-head la-la land)...I'd reccommend not getting the following stem:
Aluminum Adjustable Quill Stem by NL
I got one on ebay and the extension wobbled so I sent it back for another...and the extension still wobbled. Furthermore, it's designed really shoddily. Really low-quality bolts, the black finish scratches off very easily, and the adjustment bolt is near-inaccessible while the stem is mounted.
That's my buyer's remorse for the night!