minor problem! crankarm bolt!
 

so lately my crankarm bolt has been loosening itself very frequently. i tried tightening it today and got a fair amount of torque on it, untill the allen wrench slipped and stripped the inside of the bolt. its fine with me for now as long as it stays tight but i was wanting to carry around a spare bolt just incase it loosens up again. i was wondering if anybody knew the threading and size of bolts used on a sugino RD crank arm so i can purchase a spare bolt. thanks for any help!

The taper on your crank arm may be wallowed out if it continually loosens. You may need to replace it.

Replacement crank bolts: http://harriscyclery.net/itemdetails.cfm?ID=2334