Backshell for Standard DB9 and HD15 D-Sub Connectors
The TE Connectivity AMPLIMITE 5745171-2 is a two-piece backshell designed to fit D-Sub connectors with Shell Size E, covering standard 9-position and high-density 15-position configurations. The backshell ships with 4-40 mating screws included, so you have the jack-screws ready for the D-Sub connector interface without a separate hardware order.
What It Fits and What It Includes
This backshell mates with any standard DB9 (9-position) or high-density 15-position D-Sub connector that uses Shell Size E — the same shell size as the common DB9 footprint. The 4-40 threaded mating screws are pre-installed in the backshell halves, so you do not need to track down UNC 4-40 hardware separately. The two-piece clamshell design captures the cable jacket and provides strain relief through the included assembly hardware, clamping the round cable before the shield bond is made. The shielded enclosure — metal construction with Nickel over Copper plating — creates a continuous Faraday cage around the D-Sub solder bucket area when the backshell is clamped and the cable shield is terminated to the shell. This matters in industrial cabinets where VFD noise or switching supplies couple into signal lines; the backshell keeps common-mode currents on the shield, not the signal pins.
For BOM planning, the base product number 5745171 covers the family; the -2 suffix denotes the Silver finish variant.