What This Backshell Covers and How It Fits
The Molex 1731110011 is a one-piece D-sub backshell from the FCT series, designed for 37-position connectors. The 90° cable exit routes the round cable parallel to the panel, saving depth in enclosures where straight-out clearance is tight. The gray polyamide (nylon) body is unshielded — this is a strain-relief and cable-management shell, not an EMI can. It mates with standard D-sub connectors in shell size C — that covers both 37-position and high-density 62-position D-subs. The backshell includes assembly hardware and a strain relief clamp, so no separate order for jack-screws or the cable gland is needed.
Cable Exit and Strain Relief — What to Expect
The 90° cable exit accepts round cable. The integrated strain relief grips the jacket, not the individual conductors, to prevent pull-out at the solder cup or IDC termination. The assembly hardware (typically jack-screws and a slide-lock or hex standoffs) is included, so the backshell mounts directly to the D-sub connector without sourcing extra fasteners.
Compatibility Check — D-Sub Shell Size C
This backshell fits any standard D-sub connector in shell size C — that includes 37-position standard-density D-subs and 62-position high-density D-subs. It is not specific to Molex connectors; it will fit Amphenol, TE, and other manufacturers' D-subs of the same shell size. The 37-position count is the most common mating half.