Southwire LNS250 Steel Locknut 2.5 Inch Conduit

Product Description

The SOUTHWIRE LNS250 is a steel locknut designed for securing conduit connectors and fittings to electrical enclosures, junction boxes, and panel knockouts. This 2.5-inch locknut threads onto the threaded hub of a conduit connector, drawing the fitting tight against the wall of a box to maintain a secure mechanical and electrical bond. It is a standard hardware component in commercial and residential electrical installations and is routinely installed by licensed electricians and electrical contractors.

This locknut is suited for use in conduit runs where a 2.5-inch trade-size fitting must be terminated at an enclosure. Common applications include service entrance work, feeder conduit terminations at panelboards, and junction box connections in commercial wiring systems. Its steel construction makes it appropriate for standard indoor and outdoor conduit installations where corrosion resistance requirements are met by the conduit system itself.

Key Features

• Steel construction for reliable mechanical strength at conduit terminations
• 2.5-inch trade size fits standard 2.5-inch conduit connectors and hubs
• Threaded design draws fitting flush against enclosure wall for secure termination
• Compatible with standard threaded conduit fittings used in rigid and IMC conduit systems
• Low-profile design fits standard knockout openings without obstruction

Compatibility

Designed as an OEM-style replacement and standard-use locknut for 2.5-inch trade-size threaded conduit connectors and fittings used in rigid metal conduit and intermediate metal conduit installations.

Installation Notes

Installation is performed by a licensed electrician in accordance with applicable NEC requirements for conduit terminations. De-energize the circuit and verify the enclosure is not live before beginning work at any panelboard or junction box. Thread the locknut onto the conduit connector hub and tighten firmly against the interior wall of the enclosure using a locknut wrench or screwdriver and hammer method to ensure solid contact. Avoid over-tightening, which can distort the knockout edge and compromise the mechanical connection.

Technical Specifications

• Trade Size: 2.5 inches
• Material: Steel

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: LNS250