On Thu, Oct 13, 2016 at 4:12 PM, jim stephens <jwsm...@jwsss.com> wrote:
> If these are the connectors that can have keys inserted between every
> connector, the small difference would be significant as those would not
> align between a metric connector and an English (inch) board. The
> electrical connections would line up w/o any keying as you say.
Assuming you use the center as your reference point, on the maximum
width (86-pin) connector, nothing is going to be off by more than 5.25
mils. That's not enough to cause a problem with keying.