Bridgeport Fittings 3603 Set Screw Conduit Coupling 1-1/4 in

Product Description

The BRIDGEPORT FITTINGS 3603 is a concrete-tight set screw conduit coupling designed to join two lengths of unthreaded rigid or IMC conduit in wet and concrete-encased installations. Constructed from zinc-plated malleable iron, it measures 2.75 inches in length and 1.25 inches in trade size diameter. The set screw design allows for tool-tightened mechanical connection without threading the conduit ends, making installation straightforward for licensed electricians working on metallic conduit systems in commercial and industrial settings.

This coupling is suited for rigid metal conduit and intermediate metal conduit applications where a concrete-tight rating is required. Typical installations include conduit runs embedded in concrete slabs, underground encasements, and exposed wet-location raceways. The zinc plating provides corrosion resistance appropriate for damp and wet environments as defined under NEC Article 358 and related rigid conduit provisions.

Key Features

• Concrete-tight rating suitable for conduit embedded in concrete or exposed wet locations
• Zinc-plated malleable iron construction resists corrosion in damp and wet environments
• Set screw attachment secures unthreaded rigid or IMC conduit without threading conduit ends
• 1.25-inch trade size fits standard 1-1/4 inch rigid and IMC conduit
• 2.75-inch body length provides stable mechanical connection between conduit sections

Compatibility

Designed as an OEM-style replacement and standard-use fitting for 1-1/4 inch unthreaded rigid metal conduit and intermediate metal conduit systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements for metallic conduit systems. De-energize all circuits in the conduit run before making connections. Tighten set screws using the appropriate hex key or driver to ensure a secure, concrete-tight mechanical bond. Inspect conduit ends for burrs or damage before inserting into the coupling to avoid compromising the seal rating.

Technical Specifications

• Trade Size: 1-1/4 inches
• Body Length: 2.75 inches
• Material: Zinc-plated malleable iron
• Connection Type: Set screw
• Conduit Type Compatibility: Rigid metal conduit, IMC
• Rating: Concrete-tight

Standard Information

• Brand: BRIDGEPORT FITTINGS
• Manufacturer Part Number: 3603