Bridgeport Fittings 4058-DC Mi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$12.71

Bridgeport Fittings 4058-DC Mighty-Merge EMT to AC/MC Transition Coupling, 3/4" to 1/2", Zinc

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Model: 4058-DC

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

$12.71
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Bridgeport Fittings 4058-DC Mighty-Merge EMT to AC/MC Transition Coupling, 3/4" to 1/2", Zinc

The Bridgeport Fittings 4058-DC Mighty-Merge Combination Transition Coupling gives electricians a single-fitting solution for transitioning from 3/4" EMT conduit to 1/2" AC/MC cable, eliminating the need to stack separate connectors at the transition point. Machined in durable zinc, this combination coupling is engineered to accommodate AC/MC cable in the 10/3 to 10/8 range, making it well suited to jobs where EMT conduit and armored or metal-clad cable meet in the same box or enclosure. The Mighty-Merge design streamlines the connection, reducing the number of fittings and labor time required on commercial and industrial installations. This transition coupling is intended for use where EMT conduit and AC/MC cable share a common enclosure, a frequent scenario in commercial and industrial construction and renovation work.

Key Features

  • Trade Size: Transitions 3/4" EMT conduit to 1/2" AC/MC cable within a single combination fitting.
  • Durable Construction: Zinc body resists corrosion and delivers long-term mechanical strength at the conduit-to-cable transition point.
  • Combination Transition Design: The Mighty-Merge configuration merges EMT and AC/MC connections into one fitting, cutting down on box fill and installation steps.
  • Cable Range: Sized to accommodate AC/MC cable from 10/3 to 10/8, matching common branch-circuit cable configurations.
  • Combination Coupling Function: Eliminates the need for separate EMT connectors and AC/MC connectors at a single transition location.
  • Space-Saving Design: Combines two connection types into one compact fitting, simplifying wiring layouts inside boxes and enclosures.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Conduit-to-Cable Transition Points
  • Combining EMT Conduit with AC/MC Cable Runs
  • Panel and Junction Box Wiring Transitions
  • Renovation and New Construction Electrical Work

Why Bridgeport Fittings?

Bridgeport Fittings engineers combination fittings like the Mighty-Merge 4058-DC to solve real-world transition challenges on the job site, pairing a durable zinc body with a design built specifically to bridge 3/4" EMT conduit and 1/2" AC/MC cable. For electricians who need a dependable, single-fitting transition instead of stacking multiple connectors, the 4058-DC delivers a straightforward solution backed by Bridgeport Fittings' reputation in the conduit fittings market. Whether wiring new commercial construction or retrofitting an existing structure, this Bridgeport Fittings coupling provides a compact, code-conscious way to merge two conduit systems into one connection point.

Manufacturer Resources

Product Specs

list_batch:
BPF-20260918
Product Type:
Combination Coupling
Series:
Mighty-Merge
Department:
Electrical
Product Subgroup:
Flexible Conduit & Fittings
Product Material:
Zinc
Product Size:
3/4"
Product Group:
Conduit & Raceway

Bridgeport Fittings 4058-DC – Frequently Asked Questions

1) Will the Bridgeport 4058-DC connect 3/4 inch EMT to 1/2 inch MC cable in one fitting?
That is exactly what it does. The 4058-DC Mighty-Merge is a combination transition coupling with a 3/4 inch EMT side and a 1/2 inch AC/MC side, so you make the changeover with one fitting instead of stacking an EMT connector and an MC connector back to back in a box.
2) What size AC/MC cable fits the 1/2 inch side of the Bridgeport 4058-DC?
The AC/MC side accepts cable in the 10/3 to 10/8 range. If your armored cable falls outside that range, this coupling is not the right transition fitting for it.
3) Is the 4058-DC Mighty-Merge coupling used inside a box or out in the run?
It is a coupling, not a connector, so it joins the EMT to the AC/MC cable at the transition point itself rather than terminating into a box knockout. Bridgeport describes it for use where EMT conduit and AC/MC cable meet at a common enclosure on commercial and industrial jobs, including panel and junction box wiring transitions.
4) Do I still need a separate EMT connector and MC connector if I use the Mighty-Merge 4058-DC?
No. The combination design replaces both fittings at that one location, which also cuts the box fill and the number of pieces you install. Order it when the run changes from 3/4 inch EMT to 1/2 inch AC/MC at a single point.
5) What part number do I order for a 3/4 inch EMT to 1/2 inch AC/MC transition coupling from Bridgeport?
Bridgeport Fittings part number 4058-DC, in the Mighty-Merge series. The 3/4 inch trade size refers to the EMT side of the fitting.
6) What is the Bridgeport 4058-DC coupling made of, and will it hold up in a damp mechanical room?
The body is machined zinc, which resists corrosion and carries the mechanical load at the conduit-to-cable joint. Bridgeport lists it for commercial and industrial installations, new construction and renovation alike.
How fast can I get the Bridgeport Fittings 4058-DC 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 Bridgeport Fittings 4058-DC come with a warranty?
Absolutely. The Bridgeport Fittings 4058-DC 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 Bridgeport Fittings 4058-DC?
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 Bridgeport Fittings 4058-DC from ZenSupply?
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