SEPCO S1016 Zinc-Plated Steel ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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SEPCO S1016 Zinc-Plated Steel EMT Compression Coupling

SEPCO S1016 Zinc-Plated Steel EMT Compression Coupling

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Model: S1016

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

$0.80
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SEPCO S1016 Zinc-Plated Steel EMT Compression Coupling

The SEPCO S1016 EMT Compression Coupling joins two lengths of Electrical Metallic Tubing (EMT) into a single, continuous raceway run. This family is available across trade sizes ranging from 1/2" through 4" (including 1-1/4", 1-1/2", 2", 2-1/2", 3", 3-1/2", and 4"), so contractors can match the coupling to nearly any EMT conduit diameter on the job. Every size in the S1016 family is built from zinc-plated steel, pairing the mechanical strength of a steel fitting with a corrosion-resistant finish suited to demanding commercial and industrial electrical environments. The compression-style connection clamps securely around each length of EMT, forming a tight mechanical and electrical bond without relying on set screws, so contractors get a dependable, code-conscious joint from box to box.

Key Features

  • Trade Size Range: Offered in 1/2" through 4" trade sizes so the coupling matches the EMT conduit run being extended, with no single size representing the whole family.
  • Zinc-Plated Steel Construction: Every coupling body in this family is manufactured from steel with a zinc-plated finish, giving it the mechanical strength needed for raceway support along with added resistance to rust and corrosion over the life of the installation.
  • Compression-Type Connection: A compression coupling design draws two conduit ends together and clamps down evenly around the tubing, producing a secure mechanical grip and reliable electrical continuity between conduit sections.
  • Set-Screw-Free Design: Because the connection is compression-based rather than set-screw based, there are no screws to back out or loosen over time, helping maintain a consistent, dependable joint across every trade size in the family.
  • EMT Compatibility: Purpose-built for Electrical Metallic Tubing (EMT), the thin-wall steel raceway commonly used in commercial and light industrial wiring systems.
  • Straight-Run Coupling Function: Use this fitting to extend a conduit run in a straight line, connecting two lengths of EMT end-to-end within a raceway system, regardless of which trade size is selected.

Technical Specifications

  • Trade Size: 1/2" - 4"

Typical Applications

  • Commercial and Industrial Electrical Installations
  • EMT Conduit Runs and Raceway Systems
  • New Construction Wiring Projects
  • Electrical Renovation and Retrofit Work
  • Straight Conduit-to-Conduit Connections
  • Panelboard and Junction Box Feeder Runs

Why SEPCO?

SEPCO manufactures this EMT compression coupling family from zinc-plated steel, pairing the durability of a steel fitting with a finish built to resist corrosion in everyday commercial and industrial settings. The compression connection method gives electrical contractors a dependable, set-screw-free way to join EMT conduit sections across trade sizes from 1/2" to 4", supporting continuous, well-bonded raceway systems on every run. For professionals who need EMT fittings they can count on job after job, across the full 1/2" through 4" trade size range, this coupling offers straightforward, reliable performance without the maintenance concerns that come with set-screw hardware.

Manufacturer Resources

SEPCO Product Catalog

Product Specs

list_batch:
SEP-20260911
Product Type:
Conduit Coupling
Connection Type:
Compression
Product Finish:
Zinc-Plated
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Conduit Fittings
Product Material:
Steel

SEPCO S1016 – Frequently Asked Questions

1) What trade sizes does the SEPCO S1016 EMT compression coupling come in?
The S1016 family of EMT compression couplings runs from 1/2 inch through 4 inch trade size: 1/2, 3/4, 1-1/4, 1-1/2, 2, 2-1/2, 3, 3-1/2 and 4 inch. Each size carries its own part number, so order by size rather than by the family name: S1016 (1/2), S1017 (3/4), S1019 (1-1/4), S1020 (1-1/2), S1021 (2), S1021D (2-1/2), S1021E (3), S1021E1 (3-1/2) and S1021F (4).
2) Is there a 1-inch SEPCO EMT compression coupling?
The SEPCO compression coupling sizes available are 1/2, 3/4, 1-1/4, 1-1/2, 2, 2-1/2, 3, 3-1/2 and 4 inch. If your run is 1 inch EMT, none of these will fit; a coupling has to match the tubing's trade size exactly, so you'd need a 1 inch EMT compression fitting from another line rather than sizing up or down.
3) What should I use instead of a SEPCO S1016 EMT compression coupling in a corrosive wash-down area running rigid conduit?
The SEPCO S1016 coupling is a compression-type fitting in zinc-plated steel built for Electrical Metallic Tubing, so it follows the EMT raceway. Where the run is rigid steel conduit rather than EMT and the environment calls for a coated fitting, the Ocal CPL series rigid steel conduit coupling is PVC-coated gray and intended for rigid steel. Match the coupling to the raceway type first: EMT thin-wall takes the S1016, threaded rigid takes the CPL.
4) Is the nVent CADDY ERC twist coupling a direct substitute for a SEPCO S1016 compression coupling?
They are not interchangeable joint types. The SEPCO S1016 is a compression coupling that clamps evenly around each EMT end to form the mechanical and electrical bond, and it is offered in trade sizes from 1/2 inch through 4 inch. The nVent CADDY ERC 2G9S10WB is a twist coupling for metallic conduit supplied in a pack of 100. If the job is specified for compression EMT fittings, stay with the S1016 family; the ERC is a different connection method and a bulk-pack item.
5) Our drawings call for PVC-coated fittings. Does the SEPCO S1016 meet that or do I need a different coupling?
The S1016 coupling body is steel with a zinc-plated finish, not a PVC coating. For a drawing that specifies PVC-coated conduit fittings, the Ocal CPL series coupling is a PVC-coated gray rigid steel conduit coupling and matches that specification language. Note it is a rigid steel coupling, so the raceway itself would need to be rigid rather than EMT.
6) Compression or set-screw coupling for EMT, which should I use?
Compression is the one to use where the joint needs to stay tight without maintenance, and where an inspector or spec calls for a connection that won't loosen. The S1016 draws the two conduit ends together and clamps evenly around the tubing, with no set screws to back out over time. Set-screw couplings are faster to install and cheaper, but they rely on a screw holding its torque for both the mechanical grip and the electrical bond. In damp or vibration-prone locations, or on long feeder runs you don't want to revisit, the compression joint is the safer call.
7) What material and finish is the SEPCO S1016 coupling, and will it hold up in a damp mechanical room?
Steel body with a zinc-plated finish, in every size from 1/2 through 4 inch. The steel gives the fitting the mechanical strength to carry raceway support loads, and the zinc plating adds corrosion resistance for commercial and industrial interiors, including mechanical and equipment rooms. It is not a PVC-coated or severe-corrosive fitting; for a corrosive or outdoor-exposed environment look at a PVC-coated line such as the Ocal CPL Series for rigid conduit.
8) Can I use an EMT compression coupling to join two conduit sections already fixed in place?
A straight compression coupling like the S1016 joins two EMT ends end-to-end, which means at least one length has to be free to slide into the fitting. If both runs are strapped down and immovable, a straight coupling won't go on; you'd want a split or twist-on style coupling instead. ZenSupply carries the nVent CADDY ERC twist coupling for metallic conduit for that situation.
9) Does a compression coupling provide ground continuity between EMT sections?
Yes. The compression connection clamps around each tubing end to form a tight mechanical and electrical bond between the two conduit sections, so the steel raceway stays electrically continuous across the joint. Both the coupling body and the EMT are steel, which is what makes the bond work.
10) Is the SEPCO S1016 a coupling or a connector for a box?
It is a coupling, not a box connector. The S1016 ties two lengths of EMT together to extend a run in a straight line. To terminate the raceway into a panelboard, junction box, or enclosure you need an EMT compression connector with a locknut, which is a separate fitting.
11) Can I mix sizes, like joining 3/4 inch EMT to 1 inch EMT, with these couplings?
No. Each S1016 family coupling is a same-size, straight-through fitting, so both ends take the same trade size of EMT. Joining two different diameters calls for a reducing coupling or a reducing washer arrangement, not one of these. Order the coupling that matches the trade size of the tubing on both sides of the joint.
12) For a large EMT rough-in where I am buying couplings by the box, what are my options next to the SEPCO S1016?
The SEPCO S1016 family is ordered by trade size, with individual part numbers from S1016 at 1/2 inch up to S1021F at 4 inch, each in zinc-plated steel with a compression connection. If you want a single bulk carton instead, the nVent CADDY ERC 2G9S10WB twist coupling for metallic conduit comes as a pack of 100. The trade-off is the joint type: compression on the SEPCO, twist on the CADDY.
13) I'm standardizing EMT fittings across a building, do the large trade sizes come from the same SEPCO family?
Yes, the whole 1/2 through 4 inch range is one SEPCO compression coupling family, all zinc-plated steel and all set-screw-free, so a facility can standardize on one fitting type from branch circuits up through 4 inch feeder raceway. The large sizes are S1021D (2-1/2), S1021E (3), S1021E1 (3-1/2) and S1021F (4).
How fast can I get the SEPCO S1016 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 S1016 come with a warranty?
Absolutely. The SEPCO S1016 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 S1016?
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
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