Overview
The Bridgeport 104-S conduit locknut is a zinc electroplated steel fitting engineered to secure threaded rigid and IMC conduit to unthreaded openings in electrical boxes and enclosures. The locknut securely fastens threaded conduit to an unthreaded opening in a box or enclosure. Operators can fasten the conduit from both inside and outside an electrical box. This UL-listed component is essential for branch circuit runs, service equipment, and control panel installations where code-compliant, reliable conduit termination is required.
Key Features
- Zinc electroplated steel construction for corrosion resistance
- For use with IMC and Rigid Conduit
- Threaded design for positive mechanical lock
- Meets CSA LR39354, Federal A-A-50553, NEMA FB-1, and UL E9391/514B standards
- Inside-or-outside fastening capability for flexible installation
- Supplied in convenient box of 100 units
Technical Specifications
- Trade Size: 1-1/4 inch
- Width: 2-1/16 inch
- Thickness: 3/16 inch
- Material: Steel with zinc electroplate finish
- RoHS Compliant
- UL Listed: Yes
- Package Quantity: 100 units per box
- Installation Method: Threaded
Typical Applications
- Branch circuit conduit terminations in panel enclosures
- Service entrance rigid or IMC conduit fastenings
- Motor and drive control conduit connections
- Cable trays and trough transitions to rigid conduit
- Indoor and outdoor electrical installations requiring zinc-plated corrosion resistance
- Equipment disconnects and control stations
Compatibility & Replacements
Compatible With
- 1-1/4 inch trade size rigid conduit (RMC)
- 1-1/4 inch intermediate metal conduit (IMC)
- Standard electrical junction boxes and enclosures with unthreaded openings
- All rigid and IMC conduit systems meeting NEC Article 342 and 344 standards
Replaces / Drop-In Replacement For
- Bridgeport 104-S (same part number)
- Generic zinc-plated steel 1-1/4″ rigid conduit locknuts meeting NEMA FB-1
Works With
- Rigid metal conduit (RMC) systems per NEC Article 342
- Intermediate metal conduit (IMC) systems per NEC Article 344
- Standard electrical panelboards and motor control centers
- Any UL-listed junction boxes and equipment rated for 1-1/4″ conduit entries
