The 1053112103: The header terminates via through-hole solder. The board guide aids manual placement and keeps the header square to the PCB edge. Budget this clearance in the enclosure design, especially if the cable exits at a right angle from the receptacle.
Mating Half and Latching – Build-to-Print Checklist
The latch is integrated into the header shroud, so no additional hardware is needed. The insulation is natural LCP (Liquid Crystal Polymer). The contact material is brass with tin plating.