Steel City TC129A EMT Set-Scre...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$247.97
Steel City TC129A 3-1/2 INCH CONN,SSCREW,EMT,STL

Steel City TC129A EMT Set-Screw Connector, 3-1/2 Inch, Zinc-Plated Steel

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Model: TC129A
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$247.97
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Manufacturer Resources

Product Specs

Product Type:
Conduit Connector
Selling Unit Of Measure:
each
Standards:
UL E16592
Surface Finishing:
Zinc Plated
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Conduit Fittings
Product Type2:
EMT Conduit Fittings
Product Material:
Steel

Steel City TC129A – Frequently Asked Questions

1) Will a Steel City TC129A set-screw connector work on rigid or IMC conduit, or only EMT?
EMT only. The TC129A is an EMT set-screw connector, so it is sized to the outside diameter of 3-1/2 inch electrical metallic tubing. Rigid and IMC are threaded and have a different OD, so they need a threaded or compression fitting instead, not this set-screw body.
2) Can I use the Steel City TC129A EMT connector in a wet or outdoor location?
No. Set-screw fittings are for dry, indoor locations. The TC129A is zinc-plated steel, which handles normal indoor corrosion exposure, but a set screw does not seal the tubing, so for damp, wet, or exterior runs you want a raintight compression connector in the same 3-1/2 inch EMT size.
3) Does the TC129A come with a locknut for the box or enclosure, and is it sold individually?
The TC129A is sold each, one connector per unit. Order quantity to match your terminations, and plan on the locknut and any sealing ring or insulated throat bushing separately if your spec calls for them.
4) Is a set-screw connector acceptable as an equipment grounding path on a large EMT run?
EMT with steel fittings is recognized as an equipment grounding conductor, and the TC129A is a steel body with a zinc-plated finish rather than die-cast zinc, so the metal path through the fitting is continuous. Where a spec still calls for a bonding jumper or an insulated grounding bushing at the enclosure, add it; the connector itself does not have a grounding lug.
5) What is the exact part number to order the Steel City 3-1/2 inch EMT set-screw connector?
Steel City part number TC129A. That is the 3-1/2 inch steel set-screw EMT connector; the smaller trade sizes in the same family carry different TC numbers, so quote TC129A specifically when you need the 3-1/2 inch.
How fast can I get the Steel City TC129A 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 Steel City TC129A come with a warranty?
Absolutely. The Steel City TC129A 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 Steel City TC129A?
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 Steel City TC129A from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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