Mighty-Merge® EMT To Duplex AC Or FMC Coupling 1/2" To 3/8" Electrical Transition Coupling

The Mighty-Merge® 4156-DC is a set screw type transition coupling designed to securely join 1/2" EMT conduit to two 14/2 to 10/3 AC/MC/MCI-A/HCF/HCFMCI-A cables or 3/8" flexible metal conduit. This coupling provides a labor-saving solution compared to traditional junction box or fitting assembly installations, ideal for commercial and institutional electrical distributors and lighting solutions. The fitting allows for easy removal of armor to expose conductors to the required length to reach device boxes or enclosures. Inspection holes offer a visual end stop for cable or flexible conduit insertion. Use of anti-short bushings is recommended for safety. The coupling meets National Electric Code mechanical and electrical requirements.

Specifications

• Material: Zinc Die Cast
• Finish: Ball burnished, mirror smooth
• Trade Size: 1/2" EMT to 3/8" Flex
• AC/MC Cable Range: 14/2 (.43") to 12/2 (.52") Diameter
• Length: 2.99 in
• Width: 1.98 in
• Product Weight: 0.273 lbs
• Manufacturer: Bridgeport Fittings
• Manufacturer Part #: 4156-DC
• Country of Origin: China
• Certifications: UL-514B, CSA C22.2 No. 18 3-04, NEMA FB-1
• Patent Numbers: D581,877; D699,195; 7,402,752

Features

• Set screw type coupling for secure attachment to 1/2" EMT conduit
• Combines EMT fitting and duplex AC/MC coupling in one unit
• Corrosion-resistant zinc die cast construction for durability
• Inspection holes for visual confirmation of cable or conduit insertion
• Compatible with multiple cable types including AC, MC, MCI-A, HCF, and flexible metal conduit
• Significant labor savings over traditional junction box installations
• Recommended use of anti-short bushings for conductor protection
• Patented design ensuring reliable and code-compliant performance

Downloads & Links

• Spec Sheet
• Spec Sheet