NSI Industries 4058-DC - Mighty-Merge® Transition Fittings. EMT to 10/4 - 6/4 AC/MC/FMC Coupling
NSI Industries

4058-DC

UPC: 781747940582


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Minimum Qty: 25

Multiplier: 25

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Overview

NSI Industries Mighty-Merge® Transition Fittings (SKU: 4058-DC) deliver a proven time-saving solution for coupling EMT to 10/4–6/4 AC/MC/FMC cables. This UL-listed and CSA-certified fitting installs in one-third the time of traditional methods while reducing material costs by the same margin. The formed steel body features a TITE-BITE® connector that secures flexible metal cable with a single screw, eliminating the need for secondary fasteners. The malleable iron armor gripping saddle remains open during cable insertion for effortless alignment. Designed for non-metallic and armored cables, this fitting meets NEC requirements for hazardous locations including Class I, Div. 2; Class II, Div. 1 & 2; and Class III, Div. 1 & 2. With a maximum temperature rating of 150°C and a durable electro-zinc plated finish, the 4058-DC ensures long-term reliability in industrial and commercial installations. Ideal for quick transitions between EMT and flexible conduit systems where grounding and mechanical integrity are critical.
  • UL File No. E1383 and CSA File No. 2884 certified for compliance and safety
  • TITE-BITE® single-screw design secures flexible metal cable firmly in place
  • Formed steel body with open-position armor gripping saddle for easy cable insertion
  • Meets NEC hazardous location requirements (Class I, II, III, Div. 1 & 2)
  • Temperature rated to 150°C with electro-zinc plated steel construction

Specifications

Application
Combination Couplings used to join 3/4" EMT conduit via set screw to 10/4 through 6/4 Steel and Aluminum AC/MC/MCIA, and 1/2" Steel and Aluminum FMC. Patented
Connector Type
Combination
Material Quality
Zinc Die Cast
Special Features
Ball Burnished Finish
Standard
cULus
Trade Size
0.75 in
Type
Coupling
Package Weight (Imperial)
0.140 L
Package Weight (Metric)
0.064 kg
EMT to AC/MC/FMC/NM Transition Fitting

280-DCX

EMT to AC/MC/FMC/NM Transition Fitting
3/4" Raintight Compression Coupling

261-RT

3/4" Raintight Compression Coupling
Combination coupling for transitioning between 1/2" Rigid or IMC raceways to 1/2" EMT in wet or dry locations. Listed for use in wet locations. Raintight. Patented

290-RT

Combination coupling for transitioning between 1/2" Rigid or IMC raceways to 1/2" EMT in wet or dry locations. Listed for use in wet locations. Raintight. Patented
Mighty-Merge® Transition Fittings, 1" EMT to 3 Port AC/MC Coupling

4357-DC

Mighty-Merge® Transition Fittings, 1" EMT to 3 Port AC/MC Coupling
Mighty-Merge Threadless Rigid to FMC Transition Fitting, 1-1/2"

285-DCR

Mighty-Merge Threadless Rigid to FMC Transition Fitting, 1-1/2"
Coupling, Set Screw, Zinc Die Cast, Size 1 Inch

242-DC

Coupling, Set Screw, Zinc Die Cast, Size 1 Inch
Coupling, Set Screw, Zinc Die Cast, Size 3 1/2 Inch

248-DC

Coupling, Set Screw, Zinc Die Cast, Size 3 1/2 Inch
Coupling, Screw-In, Zinc Die Cast, Size 1 1/4 Inch

533-DC

Coupling, Screw-In, Zinc Die Cast, Size 1 1/4 Inch
Coupling, Screw-In, Zinc Die Cast, Size 1 Inch

532-DC

Coupling, Screw-In, Zinc Die Cast, Size 1 Inch
Coupling, Screw-In, Zinc Die Cast, Size 2 Inch

535-DC

Coupling, Screw-In, Zinc Die Cast, Size 2 Inch
Coupling, Set Screw, Zinc Die Cast, Size 2 1/2 Inch

246-DC

Coupling, Set Screw, Zinc Die Cast, Size 2 1/2 Inch
Coupling, Compression, Zinc Die Cast, Size 1 1/4 Inch

263-DC

Coupling, Compression, Zinc Die Cast, Size 1 1/4 Inch

Frequently Asked Questions

What types of conduit does the 4058-DC connect?

The 4058-DC connects 3/4" EMT conduit to 10/4 through 6/4 Steel and Aluminum AC/MC/MCIA, and 1/2" Steel and Aluminum FMC.

What materials are used in the 4058-DC?

The 4058-DC is made from zinc die cast with a ball burnished finish.

What certifications does the 4058-DC have?

The 4058-DC is UL listed and conforms to UL STD 514B and CAN/CSA STD. C22.2 No. 18.3.

What is the trade size of the 4058-DC?

The trade size of the 4058-DC is 3/4 inch.

Is the 4058-DC patented?

Yes, the 4058-DC has a patent number D668,618.

What is the installation method for the 4058-DC?

The 4058-DC is installed using a set screw to join the conduits.

What is the standard package quantity for the 4058-DC?

The standard package quantity for the 4058-DC is 100 units.

What is the UPC number for the 4058-DC?

The UPC number for the 4058-DC is 78174794058.

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