3/4" Rigid Steel Locknut

Southwire 282 3/4" Rigid Steel Locknut for Rigid and IMC Conduit

The Southwire 282 is a 3/4 inch rigid steel locknut engineered to connect externally threaded conduit or connectors to threadless openings in electrical boxes and enclosures. This zinc-plated steel locknut provides a secure, code-compliant connection for rigid and IMC conduit systems in commercial and residential electrical installations. Built with OPD (Oversized Pipe Diameter) threads, it ensures a tight, reliable fit that electricians and contractors trust for lasting performance.

Key Features & Benefits

• Zinc-Plated Steel Construction: Manufactured from zinc-plated steel, this locknut resists corrosion and wear in indoor and outdoor installations. The durable plating extends service life and maintains secure connections even in demanding environments.
• OPD Thread Design: Features OPD (Oversized Pipe Diameter) threads that accommodate the actual outer diameter of rigid and IMC conduit. This thread design ensures proper engagement and a tight, vibration-resistant connection every time.
• 3/4 Inch Trade Size: Sized for 3/4 inch rigid and IMC conduit, the locknut matches standard trade sizing used across the electrical industry. This standardization simplifies ordering and guarantees compatibility with common conduit runs.
• Threadless Box Connection: Designed to connect externally threaded conduit or connectors to threadless knockouts in boxes and enclosures. This versatile function streamlines installation and eliminates the need for additional adapters or hardware.
• Code-Compliant Application: Suitable for use in rigid and IMC conduit systems that meet National Electrical Code requirements. Using the correct locknut supports compliant installations and passes inspection.

Compatibility & Requirements

The Southwire 282 locknut is compatible with 3/4 inch rigid steel conduit and 3/4 inch IMC (Intermediate Metal Conduit). It threads onto externally threaded conduit ends or connectors and secures them into threadless openings found in standard electrical boxes, enclosures, and junction boxes. The OPD thread design matches the true outside diameter of rigid and IMC conduit for proper engagement.

What's Included

• One Southwire 282 3/4 inch rigid steel locknut

Frequently Asked Questions

Q: What size conduit does the Southwire 282 locknut fit?
A: The Southwire 282 fits 3/4 inch trade size rigid steel conduit and 3/4 inch IMC conduit. The locknut features OPD threads designed to match the actual outer diameter of these conduit types, ensuring a secure threaded connection.

Q: What material is the Southwire 282 locknut made from?
A: The Southwire 282 is made from zinc-plated steel. The zinc plating provides corrosion resistance for both indoor and outdoor electrical installations, extending the locknut's service life in a variety of environments.

Q: What does OPD thread mean on this locknut?
A: OPD stands for Oversized Pipe Diameter. OPD threads are designed to accommodate the true outside diameter of rigid and IMC conduit, which is slightly larger than standard pipe threads. This thread design ensures the locknut engages properly with the conduit and creates a tight, secure connection.

Q: Can I use the Southwire 282 locknut with EMT conduit?
A: The Southwire 282 is designed specifically for rigid steel conduit and IMC conduit, not EMT (Electrical Metallic Tubing). EMT has a thinner wall and different outside diameter than rigid conduit, so you should use locknuts and fittings specifically designed for EMT systems.

Q: Where do I install the Southwire 282 locknut in a conduit connection?
A: You install the Southwire 282 locknut on the externally threaded end of rigid or IMC conduit or on a threaded connector. The locknut threads onto the conduit or connector and secures it into a threadless knockout opening in an electrical box, enclosure, or junction box.

Q: Is the Southwire 282 locknut suitable for outdoor use?
A: Yes, the Southwire 282 locknut is suitable for outdoor use. The zinc-plated steel construction provides corrosion resistance, making it appropriate for both indoor and outdoor electrical installations where rigid or IMC conduit is used.

Q: How do I tighten the Southwire 282 locknut properly?
A: Thread the Southwire 282 locknut onto the conduit or connector until it seats firmly against the wall of the electrical box or enclosure. Tighten the locknut securely using a locknut wrench or pliers to ensure a solid mechanical and electrical connection. Do not overtighten, as this may damage the threads or the box knockout.

Q: Does the Southwire 282 locknut come in a box or individually?
A: The Southwire 282 locknut is available for purchase individually or in boxes of 100. Buying in boxes provides a cost savings per locknut for contractors and electricians working on larger projects.