ABB - Installation Products TK129A - Set Screw Coupling, Concrete Tight, Conduit Size 3-1/2 Inches, Length 4.687 Inches, Material Zinc Plated Steel, For use with EMT Conduit
ABB - Installation Products

TK129A

UPC: 785991025545


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Overview

The ABB TK129A Set Screw Coupling, SKU TK129A, is a robust fitting designed for secure and reliable connections in electrical conduit systems. Manufactured by ABB - Installation Products, this coupling is specifically engineered for 3-1/2 inch EMT (Electrical Metallic Tubing) conduit. Constructed from durable zinc-plated steel, it offers excellent corrosion resistance, ensuring longevity even in challenging industrial and commercial environments. The TK129A is approved as concrete tight, making it suitable for installations where conduit is embedded in concrete. This set screw connector eliminates the need for conduit threading, simplifying installation. Its captive hex head screws tighten directly onto the conduit, providing a positive holding strength and ensuring a secure ground connection. A key feature of this coupling is its insulated throat, which significantly reduces wire pulling effort by as much as 50%, streamlining the electrical installation process. Meeting rigorous industry standards, including U.L. 514B and CSA C22.2 No. 18, this coupling is listed and certified by U.L. (File No: E-23018) and CSA (LR-2884, LR-4484). It also conforms to NFPA 70-1999 (ANSI), NEMA FB1, Federal Specification W-F-408, and Federal Standard H-28 (Threads). With a length of 4.687 inches, the TK129A provides ample connection surface. Ideal for electrical contractors, facility managers, and industrial professionals requiring dependable conduit fittings for demanding installations, the ABB TK129A ensures a tight, reliable, and code-compliant electrical infrastructure. The zinc plating provides a standard finish that is electro zinc plated and chromate coated for enhanced protection. This coupling is part of ABB's T&B Fittings line, known for quality and performance in rigid and intermediate metal conduit applications.
  • Designed for 3-1/2 inch EMT (Electrical Metallic Tubing) conduit
  • Constructed from durable zinc-plated steel for corrosion resistance
  • Approved concrete tight for embedded installations
  • Features insulated throat to reduce wire pulling effort by up to 50%
  • U.L. and CSA listed and certified for reliable compliance

Specifications

Application
For use with EMT Conduit
Connection Type
Set Screw
Finish
Zinc Plated
Material
Zinc Plated Steel
Material
Steel
Material Quality
Steel
Size
3-1/2 Inches Conduit, 4.687 Inches Length
Special Features
Concrete tight when taped
Standard
UL E16592
Type
EMT Conduit Fittings
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
1.500 L
Package Weight (Metric)
0.680 kg
Set Screw Connector, Concrete Tight, Conduit Size 1-1/2 Inch, Material Zinc Plated Steel, For use with EMT Conduit

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TC121US

Set Screw Connector, Concrete Tight, Conduit Size 1/2 Inch, Material Zinc Plated Steel, For use with EMT Conduit
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TC127A

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TC729A

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TK121US

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TC722US

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TC1210US

Set Screw Connector, Concrete Tight, Conduit Size 4 Inches, Material Zinc Plated Steel, For use with EMT Conduit
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TK126US

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TK122A

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TC725A

Set Screw Connector, Insulated and Concrete Tight, Conduit Size 1-1/2 Inch, Length 2.500 Inches, Material Zinc Plated Steel, For use with EMT Conduit

Frequently Asked Questions

When is a sealing ring required for installation?

A sealing ring is required when the fitting is used outside, or on the top and sides of an enclosure.

What certifications does the product have?

The product is UL Listed and CSA certified.

What happens if I overtighten the fitting?

Excessive torque during installation could damage the EMT conduit or the fitting's housing.

What tools and torque are needed for installation?

Installation requires either a slotted or Phillips screwdriver head. Apply 35 in-lb of torque onto the EMT.

How does the fitting simplify inspection?

The fitting features a distinctive design and a vibrant gold gland nut, allowing inspectors to visually confirm conformance from a distance without close-up inspection.

When is a sealing ring required for installation?

A sealing ring is required when the fitting is used outside, or on the top and sides of an enclosure.

What certifications does the product have?

The product is UL Listed and CSA certified.

What happens if I overtighten the fitting?

Excessive torque during installation could damage the EMT conduit or the fitting's housing.

What tools and torque are needed for installation?

Installation requires either a slotted or Phillips screwdriver head. Apply 35 in-lb of torque onto the EMT.

How does the fitting simplify inspection?

The fitting features a distinctive design and a vibrant gold gland nut, allowing inspectors to visually confirm conformance from a distance without close-up inspection.

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What environmental ratings do Thomas and Betts products have?

Thomas and Betts products feature robust environmental ratings, including NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications, as well as IEC 60529 IP66 protection. These ratings ensure that their products are designed to withstand harsh industrial environments, with capabilities to resist dust, water, and corrosion, and operate effectively in a wide temperature range.

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What technical support does Thomas and Betts offer?

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