Metallics Rod Coupling 3/8-16 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$52.11
$2.39
Metallics RCTR28 Rod Coupling 3/8-16 To 1/4-20 Reduce Hx St-zn (Jar 50)

Metallics Rod Coupling 3/8-16 to 1/4-20 Reducing Hex Steel Zinc, 100 Pack

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Model: RCTR28
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$52.11
$2.39
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Metallics Industries Rod Coupling 3/8-16 to 1/4-20 Reducing Hex Steel Zinc

Professional Electrical Connector Hardware Solution

The Metallics Industries Rod Coupling 3/8-16 to 1/4-20 Reducing Hex delivers exceptional performance and reliability for electrical grounding and bonding applications. This steel zinc-coated electrical connector provides dependable fastening solutions designed for professional electricians, contractors, and industrial technicians, offering the proven quality and precision engineering that professionals trust from a leading manufacturer of electrical hardware and industrial fasteners.

Professional Features & Benefits

Reducing Connection Performance

  • 3/8-16 to 1/4-20 Thread Reduction - Enables secure connection between different rod sizes for versatile grounding system configurations with Metallics precision threading
  • Hexagonal Design - Provides positive wrench engagement for secure installation and removal with standard electrical tools
  • Steel Construction with Zinc Coating - Delivers superior strength and corrosion resistance for long-term electrical system reliability
  • Jar Pack of 50 Pieces - Convenient bulk packaging for professional contractors and electrical installations requiring multiple connections

Professional Installation Benefits

  • Standard Hex Tool Compatibility - Works with common electrical installation tools for efficient field installation
  • Precision Thread Engagement - Ensures reliable mechanical and electrical connection between grounding rods of different sizes
  • Corrosion-Resistant Finish - Zinc coating provides protection against environmental elements in electrical installations

Technical Specifications

Thread Configuration: 3/8-16 to 1/4-20 reducing connection, Material: Steel with zinc coating, Design: Hexagonal coupling, Pack Type: Jar containing 50 pieces, Product Group: Electrical Fittings, Product Subgroup: Connectors, Product Family: Electrical Supplies, Department: Electrical applications

Installation & Usage

  1. Verify thread compatibility with 3/8-16 and 1/4-20 grounding rods or threaded components
  2. Thread the 3/8-16 end onto the larger diameter grounding rod or component
  3. Hand-tighten the coupling to ensure proper thread engagement
  4. Use appropriate hex wrench or socket to securely tighten the connection
  5. Thread the 1/4-20 end onto the smaller diameter rod or electrical component
  6. Apply final torque to both connections ensuring secure mechanical and electrical continuity

Professional Applications

Ideal for:

  • Electrical Grounding Systems - Connecting grounding rods of different thread sizes in electrical panel installations
  • Lightning Protection Systems - Joining grounding components with different thread specifications for comprehensive protection
  • Telecommunications Grounding - Connecting various grounding elements in communication equipment installations
  • Industrial Electrical Systems - Bonding and grounding applications requiring thread size reduction in manufacturing facilities
  • Commercial Building Electrical - Grounding system connections in office buildings, retail spaces, and commercial facilities
  • Electrical Panel Grounding - Connecting grounding electrodes to electrical service panels and distribution equipment
  • Equipment Bonding Applications - Joining electrical equipment grounds with different thread requirements
  • Electrical Code Compliance - Meeting NEC requirements for proper grounding system connections and continuity

Steel Zinc Coating Advantage

The steel construction with zinc coating provides exceptional durability and corrosion resistance essential for electrical grounding applications. This combination ensures reliable long-term performance in both indoor and outdoor electrical installations, while maintaining the electrical conductivity required for effective grounding system operation.

Why Choose Metallics Industries Quality?

Metallics Industries demonstrates unwavering commitment to precision manufacturing and quality control excellence in electrical hardware and connector solutions. Our rod couplings undergo comprehensive testing to ensure reliable performance for electrical contractors and industrial professionals. With superior material selection, precision threading, and dependable zinc coating application, Metallics Industries provides trusted electrical connector solutions for demanding commercial, industrial, and residential electrical installations requiring code-compliant grounding system connections.

Manufacturer Resources

Product Specs

Division:
Electrical H1
Pack Type:
Jar
Product Group:
Hangers, Supports & Fasteners
Sub Division:
Electrical-E H2
Department:
Electrical
Product Subgroup:
Hex Bolts & Nuts
Product Type:
Rod Coupling

Metallics RCTR28 – Frequently Asked Questions

1) What does the Metallics RCTR28 rod coupling actually connect?
It joins a 3/8-16 threaded rod or grounding electrode to a 1/4-20 threaded rod or component. One end is tapped 3/8-16, the other 1/4-20, so it serves as a reducing adapter rather than a straight coupling. If both ends of your run are the same thread, you want a straight coupling instead, not this reducer.
2) Will a 3/8-16 to 1/4-20 reducing coupling work for tying a smaller threaded rod into my grounding electrode system?
That is what it is built for. The 3/8-16 end threads onto the larger grounding rod or electrode and the 1/4-20 end picks up the smaller rod or electrical component, maintaining mechanical and electrical continuity across the size change. It is used in electrode-to-panel grounding, equipment bonding, lightning protection, and telecom grounding where the two components are not the same thread.
3) Can I tighten this rod coupling with a standard wrench or socket?
Yes, the body is hex shaped for positive wrench or socket engagement. Thread each end on by hand first to confirm full engagement, then torque with a wrench. The hex is what separates it from a round coupling nut you would have to grip with pliers.
4) Is a zinc plated steel coupling okay for an outdoor or damp grounding connection?
The coupling is steel with a zinc coating for corrosion resistance, and Metallics rates it for both indoor and outdoor electrical installations. For direct burial or heavily corrosive environments, a buried electrode connection is usually specified in a listed, corrosion-rated fitting, so check what your grounding detail calls for before using a plated steel reducer below grade.
5) Do I need anything else besides the coupling to make the connection?
Nothing is supplied with the coupling beyond the coupling itself. You provide the 3/8-16 and 1/4-20 threaded rods or components, plus a hex wrench or socket to final-tighten both ends. Thread sizes on your existing parts should be verified first, since the reducer only accepts those two.
6) How does the RCTR28 rod coupling come packaged for a crew?
It ships in a jar pack, which keeps the small reducers contained on a van or gang box instead of loose in a bin. It is a bulk-pack item, so it suits contractors and MRO stockrooms setting up multiple grounding connections rather than someone needing a single piece.
7) What is the Metallics part number for the 3/8-16 to 1/4-20 reducing hex rod coupling?
Order it as Metallics RCTR28. That number covers the steel, zinc coated reducing hex coupling in the 3/8-16 to 1/4-20 configuration, which is the detail that matters when you are matching it to another thread combination in the same family.
How fast can I get the Metallics RCTR28 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 Metallics RCTR28 come with a warranty?
Absolutely. The Metallics RCTR28 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 Metallics RCTR28?
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 Metallics RCTR28 from ZenSupply?
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