Thomas Betts 146-TB Conduit Locknut 2 in Rigid Imc Steel

Product Description

The THOMAS BETTS 146-TB is a steel conduit locknut designed to secure rigid metal conduit (RMC) and intermediate metal conduit (IMC) connections at enclosures, panels, and junction boxes. At a 2-inch trade size with a threaded connection type, this non-insulated locknut threads onto the conduit hub to lock the fitting tightly against the knockout opening. Electricians use locknuts in pairs on standard conduit terminations to clamp the conduit body or connector bushing firmly between the locknut and the enclosure wall. The 146-TB is rated for non-hazardous area applications and is constructed from steel for durability in commercial and industrial wiring installations.

This locknut is suited for use in commercial, industrial, and residential electrical installations wherever 2-inch rigid or IMC conduit terminates at a metal enclosure, panel, or junction box. Typical applications include service entrance work, branch circuit panel terminations, and conduit runs through equipment rooms. The non-insulated design is standard for most general-purpose conduit termination work where a separate insulating bushing is used as required by code.

Key Features

• 2-inch trade size fits standard 2-inch RMC and IMC conduit threads
• Steel construction provides strength for industrial and commercial environments
• Threaded connection type for secure, positive engagement at enclosure knockouts
• Non-insulated design compatible with standard conduit termination practice using a separate insulating bushing
• Rated for non-hazardous area applications
• Single-piece locknut sold individually (package quantity 1)

Compatibility

Designed as an OEM-style replacement and standard-fit locknut for 2-inch rigid metal conduit (RMC) and intermediate metal conduit (IMC) threaded terminations at electrical enclosures and panels.

Installation Notes

Installation is performed by licensed electricians in accordance with NEC requirements for conduit terminations. Power down and lock out the panelboard or enclosure before beginning conduit termination work. Thread the locknut onto the conduit end or connector before inserting through the knockout, then tighten firmly with a locknut wrench or flat-blade screwdriver and hammer to ensure solid metal-to-metal contact. Where NEC requires an insulating bushing at the termination, install the bushing separately on the inside of the enclosure.