[aerohead]

Originally Posted by j-c-c

By using a long wheel nut, making hardly more than a tack weld, any heat related downsides would be centered towards the non load bearing end, combined with the overall mass of a long nut, with a long stud would keep the area not welded safely IMO out of the heat effected zone (800F+?). There are other welding tricks that can assist in that goal to retain original mechanical strengths of the threaded rod and most of the long wheel nut. The protruding stud if designed that way to secure the wheel cover, will be far exceeding any needed strengths or fatigue limits needed to retain the cover with the negative effects of the welding

I might just drill out the capped end of the nut, and use J-B Weld to anchor the all-thread into the nut, skipping the 'heat' altogether.