The Molex 1727040008 is a 50-position D-sub receptacle housing from the F, FCT 172704 series. It uses the DD shell size (connector layout 5) and arranges the contacts in three rows. This is the cable-side half — a free-hanging inline receptacle that accepts female crimp terminals, not a PCB-mount or solder-cup version. The housing is moulded from black glass-filled PA nylon with a steel, tin-plated shell. The unthreaded flange allows panel mounting with the matching hardware, but the primary duty is inline cable-to-cable or cable-to-panel harness assemblies where the receptacle floats rather than bolts rigidly to a board.
Contacts Not Included — The Critical Procurement Detail
The single most important fact about this housing: contacts are not included. The BOM line for 1727040008 covers only the empty receptacle shell. If your assembly house is quoting a per-position price that includes contacts, flag it; the housing and terminals are separate line items. The signal contact type designation means these cavities accept standard D-sub signal-gauge pins — typically 20-28 AWG range, depending on the specific crimp terminal selected. The 3-row DD layout uses the same contact cavity dimensions as other standard-density D-subs in this shell size.
Shell Size and Mating Compatibility
The DD shell size (connector layout 5) is the standard 50-position D-sub footprint. It mates with any standard 50-position D-sub plug housing — male pin side — that uses the same DD shell. The unthreaded flange means the housing has clearance holes for the standard 4-40 or M3 jack-screw hardware, but the screws are not installed; you add them per the assembly requirement. The steel, tin-plated shell provides EMI/RFI shielding continuity when mated with a plug that has grounding dimples or a conductive finish. For applications requiring full 360° shielding, verify the mating plug's shell finish and grounding geometry match the receptacle's tin surface.