Please Help With Front Axle Nut!!

I'm trying to replace a front axle nut on my '96 Tracker 4x4 (or should I say a flat threaded washer with shallow indentions for holes) but can't find a socket spanner that seems to work right. I really want a good torque on this thing. How knows where to get a good socket/spanner? I'd appreciate any tips.

autozone rents them.. i believe you need a 32mm