truckernix,
I have the 2005-06 parts,supplies and accessories catalog from NAPA at work and just took a look. Listed under assortments & merchandisers are two pages of axle nut wrenches AND axle spindle nuts and washer locks...these are manufactured by Brake & Wheel Industries in Chicago. They have a web site, but it is "under construction". If your rig has duals, a "grease plate" works quite well when removing the wheels..slide em off, slide em on!
Stuart