Pollak 11-721 7-Way Round Pin Trailer Socket - Heavy-Duty Die-Cast Zinc with Split Pins

The Pollak 11-721 7-Way Round Pin Socket is a heavy-duty vehicle-side connector designed for the rigorous demands of the commercial trucking and agricultural industries. This socket serves as the primary electrical interface for trailers, delivering consistent power for lighting, anti-lock braking systems (ABS), and auxiliary circuits.

Unlike solid-pin models, the 11-721 features split-brass pins. This design allows for a slight mechanical expansion when the trailer plug is inserted, creating a superior "tension-fit" that ensures maximum surface contact. This feature is critical for preventing flickering lights and intermittent power loss caused by the high vibrations of long-haul highway driving.

Built to survive in harsh environments, the 11-721 is housed in a high-strength die-cast zinc body. This metallic shell provides exceptional impact resistance and durability against road debris. To protect the internal electrical terminals, the socket includes a heavy-duty, spring-loaded cover with a positive-catch lid that snaps shut to seal out moisture, dirt, and road salt when the trailer is disconnected.

• Split-Brass Pins: Provides a secure, self-adjusting tension fit for maximum electrical conductivity.

• Die-Cast Zinc Housing: Offers industrial-grade durability and professional-grade corrosion resistance.

• 7-Pole Round Pin Design: Standard SAE J560 configuration for commercial and fleet trailers.

• High-Impact Insulator: Green ABS thermoplastic interior resists heat and provides excellent dielectric strength.

• Spring-Loaded Protective Cover: Keeps internal pins clean and dry when not in use.

• Universal 2-Hole Mount: Easy installation on standard mounting brackets and vehicle bumpers.