Topaz Lighting 666SRT 2" EMT C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$58.02
$9.07
Topaz Lighting 666SRT 2" EMT Compression Raintight Coupling, Zinc-Plated Steel

Topaz Lighting 666SRT 2" EMT Compression Raintight Coupling, Zinc-Plated Steel

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Model: 666SRT

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

$58.02
$9.07
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Topaz Lighting 666SRT 2" EMT Compression Raintight Coupling, Zinc-Plated Steel

The Topaz Lighting 666SRT is a 2" EMT compression-type raintight coupling built for secure, weatherproof conduit connections in demanding electrical installations. Constructed from zinc-plated steel, this coupling delivers reliable mechanical strength and corrosion resistance while meeting raintight and concrete-tight performance requirements for wet-location and embedded conduit runs. Its compression-type design ensures a positive, vibration-resistant joint that maintains conduit system integrity in both indoor and outdoor environments.

Key Features

  • Trade Size: 2" trade size, designed for use with 2" EMT conduit systems in commercial and industrial applications.
  • Durable Construction: Zinc-plated steel construction provides excellent corrosion resistance and long-lasting mechanical strength in tough installation environments.
  • Compression Type: Compression-style connection delivers a secure, vibration-resistant coupling that maintains a reliable conduit joint without the need for set screws.
  • Raintight & Concrete Tight: Rated raintight and concrete tight, making this coupling suitable for wet-location and embedded conduit applications where moisture ingress must be prevented.
  • EMT Compatible: Specifically designed for use with Electrical Metallic Tubing (EMT) conduit, ensuring proper fit and code-compliant performance.

Certifications & Compliance

  • Raintight Rated
  • Concrete Tight Rated
  • Suitable for Wet Locations

Technical Specifications

  • Product Size: 2"
  • Conduit Type: EMT
  • Listing: Raintight, Concrete Tight
  • Product Group: Conduit & Raceway
  • Product Subgroup: Conduit Bodies & Fittings

Typical Applications

  • Commercial and Industrial EMT Conduit Systems
  • Outdoor and Wet-Location Electrical Installations
  • Concrete-Encased Conduit Runs
  • Exposed Conduit Raceway Systems in Damp or Wet Areas
  • New Construction and Renovation Electrical Projects

Why Topaz Lighting?

Topaz Lighting's 666SRT coupling is built from zinc-plated steel with a compression-type design that meets raintight and concrete-tight standards, ensuring code-compliant performance in the most demanding installation conditions. Electrical professionals trust Topaz Lighting fittings for their consistent quality, precise fit, and dependable mechanical integrity across EMT conduit systems. Choose Topaz Lighting for reliable, professional-grade electrical fittings that stand up to the rigors of commercial and industrial work.

Product Specs

Product Type:
Coupling
Conduit Type:
EMT
Connection Type:
Compression
Listing:
Raintight, Concrete Tight
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Conduit Bodies & Fittings
Product Material:
Zinc-Plated Steel
Product Color:
Zinc-Plated
Product Size:
2"

Topaz Lighting 666SRT – Frequently Asked Questions

1) Can the Topaz 666SRT coupling be used outdoors or in a wet location?
Yes. The Topaz 666SRT 2 inch EMT coupling is rated raintight and concrete tight, so it holds up on exposed outdoor runs, damp and wet locations, and conduit that gets encased in concrete pours. That rating is what separates it from a standard set-screw EMT coupling, which is dry-location only.
2) Compression vs set-screw EMT coupling: which one do I need?
Go compression when the run is outdoors, in a damp or wet area, or getting buried in concrete. The 666SRT is the compression type, rated raintight and concrete tight, and its gland nut grips the tubing without set screws so vibration will not back it loose. Set-screw couplings are cheaper and faster but are for dry indoor locations only.
3) Is the Topaz 666SRT steel or die-cast zinc?
Steel, with a zinc plating over it. Zinc-plated steel gives you the mechanical strength for a 2 inch run plus corrosion resistance on exposed outdoor work, and it will not crack the way pot-metal die-cast bodies can when you torque the compression nut down hard.
4) Can I use a raintight compression coupling on a conduit run poured into concrete?
Yes, that is one of its listed uses. The Topaz 666SRT carries a concrete tight rating in addition to raintight, so it can be embedded in a slab or pour without wet concrete working its way into the raceway. Standard indoor couplings do not carry that rating.
5) Do I need any extra parts or sealant to install the 666SRT?
No sealant and no set screws. It is a two-ended compression coupling: cut and ream the 2 inch EMT, slide an end into each side, and tighten the compression nuts with a wrench. The compression gland is what makes the raintight seal, so the only thing that matters is getting both nuts drawn up fully.
6) Will the 666SRT join two pieces of 2 inch EMT, or is it a connector into a box?
It joins two lengths of tubing to each other. A coupling is conduit-to-conduit; to land EMT into an enclosure or panel you need a connector with a locknut instead. The 666SRT is the coupling, in 2 inch trade size.
7) What is the Topaz part number for the 2 inch raintight EMT compression coupling?
666SRT is the Topaz Lighting number. The SRT suffix denotes the steel raintight compression version in 2 inch trade size, as opposed to a plain compression or set-screw coupling in the same family.
How fast can I get the Topaz Lighting 666SRT 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 Topaz Lighting 666SRT come with a warranty?
Absolutely. The Topaz Lighting 666SRT 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 Topaz Lighting 666SRT?
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 Topaz Lighting 666SRT from ZenSupply?
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