12-circuit STAC64 right-angle header
The 34691-6122 is the 12-circuit member of the Molex STAC64 right-angle pin header line, polarized brown for keyed mating.
Position count across the series
Within the STAC64 right-angle pin header family, the 12-circuit 34691-6122 sits alongside the 34691-6121 (12 circuits, different polarization) and the 34691-6160 (16 circuits) — all share the same pitch and footprint, so position count drives the circuit match.