For a BOM line that still needs this exact 4-position, 0.100" pitch, right-angle header, the only path is surplus or independent-channel stock.
The shrouded 4-wall housing with friction lock mates with a Dubox™ receptacle that has the matching lock ramp.
Contact Rating and Plating for Signal Duty
The phosphor bronze contact material with tin-lead post finish is a standard combination for solder-through-hole termination.