Unless two suppliers existed and 7 studs were made first and a change was done and the 4 studs were phased in but the existing inventory was not used up yet being there was no rotate stock practice. Sort of like first in and last out.
Or, I wonder its a NOR vs. LOS supplier thing. My LOS is wrapped up tight while the NOR gets its clear flow coated so I can't look at that right now. I'm curious too.
Hmmmm....reminds me of Dirty Harry......"I know what you're thinking, plant manager. You're thinking 'Did he screw on seven nuts or only four?' Now to tell you the truth I forgot myself in all this mass production line excitement. But being this is a Snap On wrench, the most powerful tool in the world and will speed nut you head clean off, you've gotta ask yourself a question: 'Do I feel lucky?'
Mike