The TE Connectivity 1991253-9 is a hinged backshell designed for 9-position D-subminiature connectors. It accepts round cable with a 180° straight cable exit, routing the cable directly behind the connector rather than at an angle. The black plastic body is molded from polyamide (nylon), giving it a lightweight but rigid strain-relief housing for the cable-to-connector transition. This backshell is compatible with standard 9-position D-sub connectors that share shell size E. The assembly hardware includes 4-40 mating screws and a cable clamp, so you get the full mounting and strain-relief kit in one order code. The cable clamp secures the round cable jacket inside the backshell halves, preventing pull-out forces from reaching the solder or crimp terminations inside the D-sub connector.
What's Included and What to Confirm
Yes, the 1991253-9 includes the 4-40 mating screws and the cable clamp. The mating screws thread into the D-sub connector's jackscrew inserts to lock the backshell to the connector body. The cable clamp is the piece that wraps around the round cable jacket inside the backshell halves. This backshell is unshielded, so it provides mechanical strain relief and cable management but no EMI/RFI protection. If your application requires shielding continuity from the cable braid to the D-sub shell, you need a metal or metallized backshell with a shield clamp.