Today I went to Fastenal and they didn't have anything of the right pitch and diameter on hand. He did give me the specs though, so I'll post 'em here for future reference
The (OEM) oil drain plug on a Suzuki GZ250 is a stainless steel M (or maybe N, but m for metric makes sense) 14 (mm diameter?), 1.25 pitch, 12mm long, 17mm hex flange head bolt

I'm absolutely floored that you can find a bolt that size for a temporary replacement. You might try calling some different Fastenals around the area, I know around here they all carry different stock.

Most bolts with that big of diameter don't have such fine thread, apparently.
The Fastenal guy said that if he ordered it it would be coming from Indiana (I think. Your neck of the woods, eh?), so it might arrive by Monday, which would beat Action Sports, but it wouldn't be *the* right bolt. I guess I could try the Bryan location, but the guy I was talking to at Fastenal last night wasn't just brushing me off, I think he actually looked everywhere near by.
Do keep in mind that I'm in a small city/big town, there aren't a ton of any kind of locations around me, plus I'm in Texas, so there are big gaps between cities and towns, plus I don't have a vehicle other than my bike, so getting to those far away towns ain't easy.
One of my friends is going to either Houston or Dallas (can't remember which) this weekend, I might be able to send her somewhere if I can call them and determine that they have it in stock...
But I'm thinking I might just give up and stick the old bolt back in there tonight so I can get back to troubleshooting

an autoparts store will have it is a commune sise fore oil drain plug on a Japanese care ore you can tray a new gasquet

I'd drive it down for you but the Indiana to Texas trip isn't exactly a great one.

Take a look on Ebay. You never know till you look.

Like I said, I tried every autoparts store in town. What good would a new gasket do? The head of the bolt is mangled.

Take the old one out, grind off the damaged flats and have someone weld a nut on it.

Apparently it's the same size as an 2009-2012 F350/450/550 Super Duty oil drain plug bolt. (Some sources are saying F250 as well, but whatever, just make sure you get the result of a M14 -1.25 not M14 1.5)
Also 1984-1991 Jeep Cherokee (4WD or 2WD), 1986-91 Jeep Comanche, and some other vehicles mentioned on the fitment tab
http://www.autozone.com/autozone/par...7165_339486_0_
http://www.oreillyauto.com/site/c/de...Stores=true#at
I'm a bit ticked, apparently it's stocked at my local Autozone, so I could have gotten one of these when I was there last Sunday. Maybe I'll see if O'Reilly's can get it for me by the time I could get there, since I'm not mad at them for giving me shitty advice and they actually didn't have the part in stock (they'd have to get it from Houston)
Oh well, I'll go get one tomorrow and at least be able to do stuff this weekend.

Just be sure that you can easily screw the bolt in with your fingers to start it. If it resists starting with the strength in your fingers it may not be a correct bolt. A proper drain plug should screw in all the way using fingers, and a final snug with a tool.