I don't think I have ever seen one. That would also weaken the drive.
They are usually only found on 1" and bigger drives. Not many guys have socket sets that big. I have seen a few 3/4" drives though. I've never seen it on 1/2" or smaller drives.
Because it's only found on the big drives, it doesn't affect the required strength of the drive. I've never seen a broken one.