Nubs on stabilizer rod worn down. Can these be replaced?

TheLostBoy wrote:
Oh man, that's a good solution, but how could I drill through this threaded rod? I'd rather not take them off to put into a vice, but I assume they wouldn't stay very still.

Run it down, or up tight, the drill will not apply enough pressure to rotate. Grind a small flat to reduce chance the center punch will walk.

BTW, need to drill thin metal, afraid center punch will dent? Old time egg-beater type drill with small bit is easy to control, makes same as punch mark