SEPCO 171C Zinc Die-Cast Combi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.83
SEPCO 171C Zinc Die-Cast Combination Coupling for EMT-to-Flex Conduit Transitions

SEPCO 171C Zinc Die-Cast Combination Coupling for EMT-to-Flex Conduit Transitions

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Model: 171C

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

$2.83
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SEPCO 171C Zinc Die-Cast Combination Coupling for EMT-to-Flex Conduit Transitions

The SEPCO 171C is a zinc die-cast combination coupling engineered to join rigid electrical metallic tubing (EMT) directly to flexible conduit within a single raceway run. This family of combination couplings is available in trade sizes from 1/2" through 1" to match the raceway system on the job, giving contractors one dependable fitting for EMT-to-flex transitions instead of pairing a separate EMT coupling with a separate flex connector. Built from a zinc die-cast body across every trade size in the range, the 171C series delivers the corrosion resistance and mechanical strength electrical contractors rely on for commercial and industrial installations where a flexible whip must connect back to a rigid EMT raceway.

Key Features

  • Trade Size Range: Offered in 1/2", 3/4", and 1" trade sizes so the fitting matches the EMT and flexible conduit runs on the job.
  • Combination Design: Joins EMT conduit directly to flexible conduit in a single fitting, eliminating the need for two separate fittings at the transition point.
  • Durable Zinc Die-Cast Construction: The zinc die-cast body resists corrosion and provides the mechanical strength needed for demanding commercial and industrial electrical installations.
  • EMT-to-Flex Transition: Purpose-built for connecting rigid EMT raceway runs to flexible conduit, commonly used where a whip is needed at a motor, fixture, or piece of equipment.
  • Simplified Installation: A single combination coupling replaces multiple standalone fittings, saving installation time and reducing potential failure points along the raceway.
  • Compact Coupling Body: Zinc die-cast construction keeps each trade size in the range compact and easy to install in tight panel, junction box, and equipment enclosures.

Technical Specifications

  • Trade Size: 1/2" - 1"

Typical Applications

  • Commercial and Industrial Electrical Installations
  • EMT-to-Flexible Conduit Raceway Transitions
  • Motor and Equipment Whip Connections
  • Panelboard and Junction Box Conduit Runs
  • Renovation and New Construction Electrical Work

Why SEPCO?

SEPCO builds the 171C combination coupling series from zinc die-cast material for a fitting that stands up to the rigors of daily electrical installation work. By combining an EMT coupling and a flex connector into one fitting across the full 1/2" to 1" trade size range, SEPCO helps contractors simplify raceway transitions without sacrificing the durability professional installations demand. Choose the SEPCO 171C series for a dependable way to bridge EMT and flexible conduit runs on the job site.

Manufacturer Resources

SEPCO Product Catalog

Product Specs

list_batch:
SEP-20260911
Product Type:
Combination Coupling
Configuration:
EMT-to-Flex Transition
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Flexible Conduit & Fittings
Product Material:
Zinc Die-Cast

SEPCO 171C – Frequently Asked Questions

1) What part number do I order for a 3/4 inch EMT to flex combination coupling from SEPCO?
The SEPCO combination coupling family runs 171C for 1/2 inch, 172C for 3/4 inch, and 173C for 1 inch trade size. So a 3/4 inch EMT-to-flex transition is a 172C. Each size is a single fitting handling both ends, so you order one part per transition rather than an EMT coupling plus a separate flex connector.
2) Can I use a SEPCO 171C to run a flex whip off an EMT raceway to a motor?
That is exactly what it is built for. The 171C series is an EMT-to-flex transition coupling, so one end takes the rigid EMT run and the other takes flexible conduit feeding a motor, fixture, or equipment connection. Match the trade size of the fitting to both the EMT and the flex: 1/2, 3/4, or 1 inch.
3) Does a combination coupling replace using two separate fittings at an EMT to flex transition?
Yes. A combination coupling like the SEPCO 171C does the job of an EMT coupling and a flex connector in one body, so there is one fitting at the transition instead of two joined together. Fewer joints means fewer places to loosen up along the raceway, and it takes up less room inside a panel or junction box.
4) What material is the SEPCO 171C coupling made from, and will it hold up in an industrial space?
Zinc die-cast, across all three trade sizes. Zinc die-cast gives corrosion resistance and the mechanical strength for commercial and industrial raceway work, which is why it is the standard body material for EMT and flex fittings. It is not a sealed or liquidtight fitting, so for wet or washdown locations you want a liquidtight flex connector system instead.
5) Is the trade size on the coupling the same on both the EMT side and the flex side?
The SEPCO combination couplings are sold by a single trade size, 1/2, 3/4, or 1 inch, which is the size of the raceway on both sides of the transition. If your EMT and flexible conduit are different trade sizes, this fitting is not the answer; you need separate fittings and a reducing arrangement.
6) Will the SEPCO 171C fit in a tight panelboard or junction box?
The zinc die-cast body is kept compact in every trade size from 1/2 to 1 inch, and it is commonly used for panelboard and junction box conduit runs. Because one combination coupling replaces a coupling plus a connector, it also occupies less length at the transition than stacking two fittings.
How fast can I get the SEPCO 171C 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 171C come with a warranty?
Absolutely. The SEPCO 171C 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 171C?
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 171C from ZenSupply?
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