NSI Industries 4256-DC - Mighty-Merge™ Transition Fittings. Two 1/2" to One 3/4" EMT Coupling
NSI Industries

4256-DC

UPC: 781747942562


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Minimum Qty: 10

Multiplier: 10

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Overview

NSI Industries Mighty-Merge™ Transition Fittings (SKU: 4256-DC) simplify EMT conduit installations by merging two 1/2" conduits into one 3/4" conduit without requiring a pull-box. This reduces material costs, labor time, and installation complexity while maintaining code compliance. The fitting is designed for EMT (Electrical Metallic Tubing) applications, providing a secure and reliable transition between conduit sizes. Ideal for residential, commercial, and industrial electrical systems where space constraints or code restrictions limit pull-box use. The zinc-plated steel construction ensures durability and corrosion resistance, while the threaded design allows for easy installation and removal. Compatible with standard EMT conduit sizes, the 4256-DC eliminates the need for additional fittings or adapters, streamlining the wiring process. Suitable for new construction, renovations, or retrofits, this fitting is a cost-effective solution for electricians and contractors seeking to optimize their workflow.
  • Merges two 1/2" EMT conduits into one 3/4" conduit
  • Eliminates the need for a pull-box, reducing installation time and material costs
  • Zinc-plated steel construction for durability and corrosion resistance
  • Threaded design for easy installation and removal
  • Compatible with standard EMT conduit sizes

Specifications

Application
Set screw transition couplings used to join two ½” EMT to one ¾” EMT. The Mighty-Merge™ Two to One can be used in commercial and institutional construction or OEM systems. When limited knockout space is available entering an enclosure or panel, use to separate or isolate circuits, can help speed up the installation and coordination in and out of block wall construction. Used in OEM designs requiring tight parallel raceway management. The single screw inspection cover provides for an easy access for tracing of conductors. An overall lower total cost compared to the traditional junction box installation. Patented. *Consult factory for 105degree filler plug
Connector Type
Transition
Material Quality
Zinc Die Cast
Series
Mighty-Merge™ Transition Fittings
Size
1/2" to 3/4" EMT Coupling
Special Features
Dry Location
Standard
cULus
Trade Size
2-1/2 , 1-3/4
Type
Coupling
Package Weight (Imperial)
0.250 L
Package Weight (Metric)
0.113 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 are the dimensions of the 4256-DC?

The dimensions are: A: 2.05 inches, B: 1.12 inches, C: 2.64 inches, D: 0.92 inches.

What is the application of the 4256-DC product?

The 4256-DC is used as a set screw transition coupling to join two ½” EMT to one ¾” EMT, suitable for commercial and institutional construction or OEM systems.

What trade sizes does the 4256-DC accommodate?

The 4256-DC accommodates two ½” EMT to one ¾” EMT.

What materials are used in the 4256-DC?

The 4256-DC is made from zinc die cast material.

How does the 4256-DC help with installation?

It helps speed up installation and coordination in tight spaces, especially in block wall construction.

What certifications does the 4256-DC have?

The product is certified under UL File Number c-UL-us, E20534.

What is the purpose of the single screw inspection cover?

The single screw inspection cover provides easy access for tracing conductors.

What is the standard packaging quantity for the 4256-DC?

The standard packaging quantity is 40 units.

What is the UPC number for the 4256-DC?

The UPC number for the 4256-DC is 78174794256.

What is the patent number for the 4256-DC?

The patent numbers are 8,242,369 and D619,967.

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