Arlington Industries GL350 Grounding Locknut 3.5 in

Product Description

The ARLINGTON INDUSTRIES GL350 is a grounding locknut sized at 3.5 inches, designed to establish a reliable electrical ground connection between metallic conduit and an enclosure or junction box. Grounding locknuts are used where standard locknuts are insufficient for maintaining a low-impedance ground path. The GL350 provides the mechanical bite and electrical continuity required by the NEC for grounded metallic conduit systems. It is installed by licensed electricians during conduit termination work on panels, enclosures, and boxes in both new construction and retrofit applications.

The GL350 is suited for use in commercial and residential electrical installations where a 3.5-inch metallic conduit termination requires a dedicated grounding locknut. Typical applications include service entrance conduit terminations, large feeder conduit runs, and panel enclosure connections. This hardware accessory is sold individually and is appropriate for electricians working on rigid metal conduit or intermediate metal conduit systems at the 3.5-inch trade size.

Key Features

• 3.5-inch trade size fits standard metallic conduit of that diameter
• Designed to maintain a low-impedance ground path at conduit-to-enclosure connections
• Provides the grounding continuity required for compliant metallic conduit installations
• Sold as a single unit for precise quantity ordering

Compatibility

Designed as an OEM-style grounding locknut for use with 3.5-inch trade size rigid metal conduit and intermediate metal conduit terminations at metallic enclosures and junction boxes.

Installation Notes

Installation is performed by a licensed electrician. De-energize the circuit and verify absence of voltage before beginning conduit termination work. The locknut should be tightened securely to ensure the serrated edge bites into the enclosure metal and establishes a solid ground bond. Follow applicable NEC requirements for grounding and bonding of metallic conduit systems.