Fork tube drain bolts....if they strip or won't come out...don't fret.
I mean you can freak out...it's what "I" just did when the first one stripped out. The 6mm socket hole wasn't perfect from the last guy to take it out...I just made it worse when it wouldn't even budge with a 18" breaker bar.
My fix, and it'll be Tuesday before I'm 100% sure it'll work, but...here it goes:
Find a drill that 'just' fits into the socket part of the screw and drill down until it feels 'different'. About 1/4" or so should be more than enough.
Take a punch that will fit into that hole, and give it a whack. If the head doesn't separate from the threaded portion, drill down a little more. Whack it again. The head will separate from the body of the bolt without damage to anything inside the fork body. When you pull the fork apart to clean/check/rebuild it, the bolt portion will unscrew nicely from the bottom of the inner fork guts.
You can order new bolts and wait a week or so, or find an 8x1.25MM bolt about 18mm long with a 6mm tall socket head and about 13mm wide. This will fit nicely into the space. McMaster Carr part #91290A422 is a bit taller, but the crown will 'just' clear the axle. Might take a tiny bit of filing at most.
Yeah...stripped out both, snapped the heads off, bought new bolts and off we go.