The TE Connectivity ADK 5-1478762-3 is a two-piece metal backshell designed for 25-position D-subminiature connectors, with a 180° cable exit for straight-through cable routing. It is a shielded, nickel-plated zinc assembly that provides both mechanical strain relief and EMI containment for round cable harnesses. The backshell includes mating screws (4-40 thread) and assembly hardware — grommets and strain relief — so you get everything needed to terminate a cable in one package. This is the standard ADK-series backshell for DB25 connectors, and it also fits high-density 44-position D-sub shells (same shell size B), making it a versatile choice for legacy serial, parallel, or instrumentation cables.
Shielding and Hardware — What You Get
The shielded design uses a full metal shell to contain radiated emissions and protect against external interference — critical when running D-sub cables near power supplies or in industrial racks. The included 4-40 mating screws let you secure the backshell to the connector without sourcing separate hardware; they thread into the standard D-sub jackscrew holes. Assembly hardware, grommets, and strain relief are all in the box, so you can clamp the cable jacket and prevent pull-out at the termination point. The nickel plating on the zinc die-cast body resists corrosion and maintains a consistent ground path across the shell.
This backshell is designed for 25-position D-sub connectors and also fits high-density 44-position shells that share the same shell size B. The two-piece construction allows you to assemble the backshell after the wires are terminated to the D-sub, then close the halves and tighten the screws. This is the same approach used on AMPLIMITE HDP-20 and other standard D-sub families — the backshell clamps over the connector body and the 4-40 screws engage the threaded inserts.