For F**k's sake! I love riding my new 3-speed (with the old 3-speed) but how the hell am I supposed to fix flats if there's a 50% chance of stripping the axle nuts every time I put the wheel back in?

This is the second time out of maybe four or five times tightening the wheel, ever, except this time it's the nut on the other side (non drive side). I have the anti-rotation washers, I liberally greased the threads, I was very careful to thread the nut on straight and I was still paranoid after the first time. I used one hand around a 6" box wrench with my fingers on the stays. Am I just grossly overestimating what 25 Nm of torque feels like or am I doing something else wrong? Surely there are only so many of these nuts out there at reasonable prices and availability.

*In a toss up between this forum and Bicycle Mechanics, I chose this one. Maybe the wrong one, but [shrug].