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SEPCO C22 Die Cast Zinc 3/8-Inch Set Screw Straight Connector
The SEPCO C22 Die Cast Zinc 3/8-Inch Set Screw Straight Connector is engineered to join conduit sections securely within electrical raceway systems. Built from die cast zinc for durable, corrosion-resistant performance, this straight connector uses a set screw connection method to lock conduit firmly in place at the 3/8-Inch trade size. Its compact, straight-body design makes it a dependable choice for electricians and contractors who need a reliable mechanical connection point when routing conduit through boxes, enclosures, and raceway runs on commercial, industrial, and residential wiring projects. The set screw connection method allows installers to make a fast, secure attachment using common hand tools, without the need for soldering, welding, or specialty crimping equipment, helping keep installation labor efficient on the job site.
Key Features
- Trade Size: Sized for 3/8-Inch conduit applications, ensuring a precise, code-appropriate fit for smaller-diameter raceway runs.
- Durable Construction: Die cast zinc body resists corrosion and provides long-term mechanical strength in demanding installation environments, indoors or in protected outdoor locations.
- Set Screw Connection: A set screw mechanism secures the conduit firmly in place, allowing for quick, tool-based installation without soldering or welding.
- Straight Connector Configuration: Designed as a straight-body connector for in-line conduit-to-box or conduit-to-conduit connections, simplifying raceway layout.
- Compact Profile: The low-profile zinc housing fits into tight enclosures and junction boxes common in electrical panelboards and raceway systems.
- Zinc Die-Cast Body: The die casting process produces a dense, uniform connector body that holds its shape and grip under repeated tightening.
- Tool-Friendly Design: The set screw head is sized for standard screwdrivers, keeping installation and future servicing straightforward for licensed electricians.
Technical Specifications
- Refer to manufacturer documentation for complete technical specifications.
Typical Applications
- Commercial and Industrial Electrical Installations
- Conduit and Raceway Systems
- Junction Box and Panelboard Connections
- Renovation and New Construction Wiring
- General Electrical Contracting and Maintenance Work
Why SEPCO?
SEPCO builds electrical fittings like the C22 connector from die cast zinc for consistent strength and corrosion resistance on the job site. The set screw design offers electricians a fast, secure installation method they can count on for dependable conduit connections, reducing callbacks and rework. As a straightforward, single-purpose fitting, the C22 is built to do one job well: hold conduit securely at the 3/8-Inch trade size, connection after connection. Choose SEPCO for electrical fittings built to perform in professional, code-compliant installations.
Manufacturer Resources
SEPCO Product Catalog
Product Specs
- list_batch:
- SEP-20260911
- Product Type:
- Connector
- Connection Type:
- Set Screw
- Department:
- Electrical
- Product Group:
- Conduit & Raceway
- Product Subgroup:
- Conduit Fittings
- Product Material:
- Zinc Die-Cast
- Product Size:
- 3/8"
SEPCO C22 – Frequently Asked Questions
1) What size conduit does the SEPCO C22 set screw connector fit?
The C22 is a 3/8 inch trade size fitting, so it takes 3/8 inch conduit only. For any other run diameter you need a different trade size body; the set screw will not draw down on larger tubing.
2) Can I use the SEPCO C22 connector outdoors or in a wet location?
Die cast zinc gives the C22 corrosion resistance for indoor and protected outdoor locations. It is a set screw fitting, not a liquidtight one, so for a wet or washdown location where the seal matters, use a liquidtight connector instead, such as the Hubbell Wiring PS0509N SwivelLok nylon liquidtight connector or the PVC-coated Ocal ST145-G.
3) Is the Hubbell SwivelLok PS0509N a substitute for the SEPCO C22 set screw connector?
No. The SEPCO C22 is a 3/8-inch die cast zinc connector that grips conduit with a set screw, intended for rigid raceway runs into boxes and enclosures. The Hubbell Wiring PS0509N is a SwivelLok multi-position liquidtight nylon connector in 1/2-inch trade size, built for liquidtight flexible conduit with a swiveling body. Different trade size, different conduit type, and a nylon rather than zinc body, so it is not a drop-in for a C22 connection.
4) What connector should be used instead of the SEPCO C22 where the conduit run has to stay liquidtight?
The C22 is a set screw straight connector for standard raceway work and is not a liquidtight fitting. For a liquidtight flexible conduit termination, the Hubbell Wiring PS0509N SwivelLok multi-position liquidtight nylon connector in 1/2-inch handles that duty, and the Ocal ST145-G is a PVC-coated liquidtight flexible conduit connector for installations where the raceway system is PVC-coated for corrosive environments.
5) How does a set screw conduit connector attach, and do I need special tools?
The conduit slides into the fitting body and a set screw clamps down to lock it. The screw head takes a standard screwdriver, so there is no soldering, welding, or crimping tool involved, and the joint can be loosened later for servicing.
6) Is the C22 for connecting conduit to a box, or conduit to conduit?
It is a straight-body connector used for in-line conduit-to-box or conduit-to-conduit terminations, which is why it shows up terminating runs into junction boxes, enclosures, and panelboards.
7) For a corrosive or wash-down area, how does the SEPCO C22 compare with the Ocal ST145-G?
The SEPCO C22 uses a die cast zinc body for corrosion resistance indoors and in protected outdoor locations, with a set screw grip on 3/8-inch conduit. The Ocal ST145-G is a PVC-coated connector for liquidtight flexible conduit, so the coating and flexible-conduit termination suit raceway systems specified as PVC-coated. Which one fits depends on whether the opening runs rigid conduit at 3/8-inch or liquidtight flex in a PVC-coated system.
8) Which of these connectors allows the fitting angle to be adjusted after the conduit is in place?
The SEPCO C22 is a fixed straight-body connector; the set screw locks 3/8-inch conduit in line with no angular adjustment. If the enclosure entry needs the conduit to leave at a chosen angle, the Hubbell Wiring PS0509N is a SwivelLok multi-position liquidtight connector in 1/2-inch, where the multi-position body provides that adjustment.
9) Will a 3/8 inch set screw connector fit inside a crowded junction box?
The C22 uses a low-profile zinc housing meant for tight enclosures and junction boxes, and at 3/8 inch trade size it is the smallest common body, so it takes up little room on a crowded can.
10) What is the SEPCO part number for the 3/8 inch die cast zinc set screw connector?
Order it as SEPCO C22. That is the full model and manufacturer part number for the 3/8 inch die cast zinc straight set screw connector, and it is sold as a single configuration with no finish or length options to specify.
11) Is a zinc set screw connector strong enough to retighten over repeated service work?
The die casting process gives a dense, uniform body that holds its shape and grip under repeated tightening, which is why these get specified for maintenance work where the fitting may be opened more than once.
How fast can I get the SEPCO C22 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 C22 come with a warranty?
Absolutely. The SEPCO C22 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 C22?
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