Overview
The Bridgeport 321 plastic bushing is a standard electrical fitting designed to terminate threaded rigid and IMC conduit connections at junction boxes. The plain plastic material is temperature rated to 105 degrees Celsius, providing reliable insulation and conductor protection in industrial and commercial electrical installations. Manufactured to meet OSHA-recognized standards, this 1/2″ gray bushing is a practical choice for conduit termination and wire insulation protection.
Key Features
- Terminates and protects conductors inside threaded rigid and IMC conduits when entering a box using a simple locknut
- Temperature rating of 105 degrees Celsius for reliable long-term performance
- CSA approval UL 514-B certification ensures compliance with electrical standards
- Gray plastic construction for durability and chemical resistance
- Can be used with locknut to terminate threaded rigid and IMC to box, or used with connector to prevent damage to wire insulation
- Bulk box of 99 units reduces per-unit cost on larger projects
Technical Specifications
- Trade size of 1/2-Inch
- Overall length of 3/8 inches and diameters of 5/8 inches and 1-inch
- Material: Gray plastic
- Temperature rating of 105 degrees Celsius
- Installation: Threaded female
- Quantity per box: 99 units
- Color: Gray
- Standards: UL 514-B, NEMA FB-1, CSA certified
Typical Applications
Used with locknut to terminate threaded rigid and IMC to box, or used with connector to prevent damage to wire insulation. These bushings are ideal for:
- Junction box conduit entry termination
- Industrial control panel wiring
- Commercial electrical installations
- Conductor protection in rigid conduit systems
- IMC (Intermediate Metal Conduit) applications
Compatibility & Replacements
Compatible With
- Rigid steel conduit (RSC)
- Intermediate Metal Conduit (IMC)
- Standard electrical locknut fastening
- Conduit-to-box termination hardware
Replaces / Drop-In Replacement For
- Other standard 1/2″ plastic threaded female bushings
- Equivalent electrical conduit termination fittings meeting UL 514-B specifications
Works With
- Electrical conduit systems (rigid and IMC)
- Standard junction box hardware
- Locknut fasteners
- Conduit connectors and adapters
