The 1735447-4: This is the receptacle side; it accepts female socket crimp terminals that are ordered separately.
Contacts Not Included — What That Means for Your BOM
The listing note is clear: contacts are not included with this housing. The 1735447-4 ships as an empty shell — you need to source the matching crimp terminals separately. The contact termination is crimp, so the build process is: strip the wire, crimp the terminal, insert it into the housing until the latch locks it.
Mating Half and Pitch Match
The 2.00 mm pitch is the critical dimension for board layout — it must match the mating header's pin spacing. This receptacle mates with a 2.00 mm pitch header from the same HPI series; the latch lock on the housing engages with the header's locking ramp. Single-row, 4 positions, so the header will be a 4-pin, single-row, 2.00 mm pitch male pin header. Confirm the header part number against your BOM before committing the board footprint.