No. Both sides of most Helicomatic rear hubs use non-standard 5/32" balls, with the cones and cups to match that size. Standard hubs use 1/4" balls. There is apparently a "Sport" model Helicomatic hub that uses standard 1/4" balls, but I've never seen one in the flesh.

http://www.borgercompagnie.com/helicomatic/specs.html