SEPCO GL74 Series Threaded Gro...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.44
SEPCO GL74 Series Threaded Grounding Locknut, Zinc-Plated Steel

SEPCO GL74 Series Threaded Grounding Locknut, Zinc-Plated Steel

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Model: GL74

In Stock (leaves warehouse same day if ordered before 3pm ET)

$4.44
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SEPCO GL74 Series Threaded Grounding Locknut, Zinc-Plated Steel

The SEPCO GL74 Series Zinc-Plated Steel Threaded Grounding Locknut secures conduit connections to enclosures, panels, and junction boxes while establishing a dependable grounding path throughout an electrical system. This family is available in 1-1/2" and 2" trade sizes, with each zinc-plated steel locknut biting firmly into conduit hub threads for a tight mechanical connection alongside a continuous electrical bond. As part of SEPCO's electrical hardware lineup, the GL74 series is a practical, corrosion-resistant choice for commercial, industrial, and residential conduit installations where consistent grounding continuity and long-term durability are essential.

Key Features

  • Trade Size: Available in 1-1/2" and 2" trade sizes to match common conduit hub and enclosure knockout sizing.
  • Durable Construction: Manufactured from zinc-plated steel for reliable corrosion resistance and long-term durability in conduit and enclosure grounding applications.
  • Threaded Design: Standard threaded locknut construction bites securely into conduit hub threads for a tight, dependable mechanical connection.
  • Reliable Grounding Path: Provides a continuous bonding connection between conduit and enclosure to help maintain grounding continuity across the electrical system.
  • Zinc-Plated Finish: The zinc-plated surface helps resist rust and corrosion in typical indoor electrical environments, supporting a longer service life.
  • Compatible Hardware: Designed to work with standard threaded conduit hubs and enclosure knockouts commonly found in commercial and residential wiring systems.

Technical Specifications

  • Trade Size: 1-1/2" - 2"

Typical Applications

  • Conduit and Raceway Grounding Connections
  • Panelboard and Enclosure Bonding
  • Commercial and Industrial Electrical Installations
  • Residential Electrical Wiring Systems
  • Renovation and New Construction Projects

Why SEPCO?

SEPCO builds the GL74 series grounding locknut from zinc-plated steel to deliver dependable corrosion resistance and long-lasting performance in demanding electrical environments. The threaded design, available in 1-1/2" and 2" trade sizes, ensures a secure, code-compliant bond between conduit and enclosure, helping electrical professionals maintain safe and reliable grounding on every installation. SEPCO's focus on durable, straightforward hardware makes the GL74 series a practical addition to any electrician's conduit grounding toolkit.

Manufacturer Resources

SEPCO Product Catalog

Product Specs

list_batch:
SEP-20260911
Product Type:
Grounding Locknut
Connection Type:
Threaded
Product Finish:
Zinc-Plated
Department:
Electrical
Product Group:
Grounding & Bonding
Product Subgroup:
Grounding & Bonding
Product Material:
Steel

SEPCO GL74 – Frequently Asked Questions

1) What trade sizes does the SEPCO GL74 series grounding locknut come in?
Three trade sizes are orderable in the SEPCO GL grounding locknut family: 1 inch (GL72), 1-1/2 inch (GL74), and 2 inch (GL75). Match the locknut to the conduit hub or enclosure knockout size you are terminating into, not to the wire size.
2) Will a SEPCO GL grounding locknut thread onto standard rigid conduit and enclosure knockouts?
Yes. It is a standard threaded locknut, so it mates with standard threaded conduit hubs and enclosure knockouts in the matching trade size. The threads bite into the hub thread to give both a tight mechanical connection and a continuous bond between conduit and enclosure.
3) What is the difference between a grounding locknut and a plain conduit locknut?
A plain locknut just clamps the fitting to the box mechanically. The SEPCO GL series grounding locknut does that and also establishes a bonding path between the conduit and the enclosure, which is what you want where grounding continuity has to be maintained through the raceway run rather than relying on the knockout contact alone. If you only need to secure a connector and the bond is carried by a separate equipment grounding conductor and lug, a standard locknut will do.
4) Is a zinc-plated steel grounding locknut suitable for outdoor or wet locations?
The GL series is zinc-plated steel, which resists rust and corrosion in typical indoor electrical environments. For exposed outdoor, damp, or corrosive-atmosphere work, specify a fitting rated for that environment instead; zinc plating on steel is a general-purpose indoor finish.
5) Can I use these grounding locknuts for panelboard bonding on a commercial job?
Yes, panelboard and enclosure bonding is one of the stated uses for the SEPCO GL grounding locknut, along with conduit and raceway grounding connections in commercial, industrial, and residential installs, both new construction and renovation. Available sizes run 1 inch, 1-1/2 inch, and 2 inch, so size the locknut to the hub entering the panel.
How fast can I get the SEPCO GL74 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SEPCO GL74 come with a warranty?
Absolutely. The SEPCO GL74 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the SEPCO GL74?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SEPCO GL74 from ZenSupply?
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