Overview
The Bridgeport 107-S conduit locknut is a 2-1/2″ threaded locknut engineered for secure fastening of rigid and IMC conduit to electrical boxes and enclosures. Built from electro-plated zinc steel, this UL-listed component meets NEMA FB-1 standards and is CSA certified, making it the trusted choice for electricians, contractors, and system integrators. Supplied in standard box quantities of 25 units.
Key Features
- 2-7/8″ diameter with 3/16″ thickness for standard 2-1/2″ trade size conduit
- Electro-plated zinc finish resists corrosion in indoor and outdoor environments
- UL listed and CSA certified per NEMA FB-1 specifications
- Steel construction provides superior strength and longevity
- Threaded design ensures quick, tool-free installation on rigid or IMC conduit
- Supplied as box of 25 for job-site efficiency
Technical Specifications
- Trade Size: 2-1/2 inch
- Material: Steel, zinc electro-plated
- Outer Diameter: 2-7/8 inch
- Thickness: 3/16 inch
- Finish: Zinc electro-plated
- Certification: UL listed, CSA certified (CSA LR39354)
- Standards Compliance: NEMA FB-1
- RoHS Compliant: Yes
- Package Quantity: 25 units per box
- Application: Rigid and IMC conduit fastening
Typical Applications
The Bridgeport 107-S locknut is used in electrical installations where rigid or intermediate metal conduit must be securely fastened to:
- Electrical enclosures and control panels
- Distribution boxes and junction boxes
- Industrial machinery and equipment control systems
- Commercial and residential wiring installations
- Outdoor and indoor electrical infrastructure
- HVAC and building automation systems requiring conduit entry
Compatibility & Replacements
Compatible With
- Rigid conduit (2-1/2″ trade size)
- IMC (Intermediate Metal Conduit, 2-1/2″ trade size)
- Standard electrical boxes with threaded entries
- NEMA-compliant enclosures
Replaces / Drop-In Replacement For
The Bridgeport 107-S is compatible with other 2-1/2″ UL-listed conduit locknuts meeting NEMA FB-1 standards. Verify compatibility with your system specifications before ordering.
Works With
- All 2-1/2″ rigid and IMC conduit systems
- Standard electrical hand tools (wrench, pliers)
- NEMA and NEC-compliant installations
- Both indoor and outdoor electrical systems










