On 10/13/2016 3:07 PM, Eric Smith 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.
It doesn't make much difference in practice. The highest pin-count
.156" connector I've ever dealt with was 86 pin (43x2), and the
difference in the nominal first-to-last position is only 10.5 mils,
which is on the order of the non-cumulative position tolerance.