Southwire LNS300I Sealing Locknut Steel 3 Inches

Product Description

The SOUTHWIRE LNS300I is a 3-inch steel sealing locknut designed to secure conduit fittings and provide a watertight or airtight seal at enclosure knockouts and junction box entries. It threads onto standard conduit connectors and tightens against the enclosure wall to prevent moisture, dust, and contaminants from entering the box. Electricians use this locknut in conduit installations where a standard locknut alone does not provide adequate sealing. The steel construction provides the mechanical strength and durability required for industrial and commercial electrical work.

This sealing locknut is suited for use in conduit systems where moisture ingress is a concern, including wet locations, damp utility spaces, and outdoor enclosures. It is a direct-replacement-style fitting compatible with 3-inch conduit applications. Installation is handled by licensed electricians working on commercial, industrial, and residential conduit runs in accordance with National Electrical Code requirements.

Key Features

• 3-inch trade size for use with standard 3-inch conduit connectors and enclosure knockouts
• Steel construction provides mechanical strength and resistance to deformation during tightening
• Sealing design helps prevent moisture and contaminants from entering electrical enclosures
• Threaded engagement locks fitting securely against the enclosure wall
• One-year limited warranty from SOUTHWIRE

Compatibility

Designed as an OEM-style replacement sealing locknut for 3-inch conduit fittings used in standard electrical enclosure and junction box installations.

Installation Notes

Installation is performed by a licensed electrician. De-energize the circuit and verify with a meter before working inside any enclosure. Thread the locknut onto the conduit connector by hand, then tighten with a locknut wrench or suitable spanner to achieve a firm, flush seat against the enclosure wall. Follow all applicable NEC requirements for conduit fittings in wet or damp locations.

Technical Specifications

• Trade Size: 3 inches
• Material: Steel
• Weight: 0.2 pounds
• Warranty: One Year Limited
• Country of Origin: Indonesia

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: LNS300I