HereNT

Ok, so I'm not the most knowledgable about threadings and stuff - here's my question:

I have exactly 4 crank arm bolts (the ones that hold the crank to the BB) between three bikes. One bike is a MTB, one a road bike (fixie conversion), and one a track bike. I know that I can use the bolts from the track bike on the road, which is what I'm going to be doing tonight. However, I'd like to be able to keep the track bike built up for better weather days over the winter. Later this week I'll get an extra set of bolts for whichever bike doesn't have them after tonight...

But can I use the bolts out of the MTB on either the other bikes? I'm probably going to try it, but I know that sometimes bolts can thread OK but be just a <b><i>little</i></b> bit off and end up stripping things down the road.

Any thread gurus would be welcome. I believe that they're all cheaper Shimano sealed cartridge bearings...

Thanks,
hereNT