Authorized ABB Distributor (Installation Products)
ABB - Installation Products TK121A - Set Screw Coupling, Concrete Tight, Conduit Size 1/2 Inch, Length 1.625 Inches, Material Zinc Plated Steel, For use with EMT Conduit

ABB Installation Products TK121A Set Screw Coupling, Concrete Tight, Conduit Size 1/2 Inch, Length 1.625 Inches, Material…

UPC: 785991023886


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Multiplier: 500

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Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The ABB TK121A Set Screw Coupling is a zinc-plated steel coupling designed for secure, concrete-tight connections in 1/2-inch EMT (Electrical Metallic Tubing) conduit systems. Engineered for industrial, commercial, and residential electrical installations, this coupling eliminates the need for conduit threading while providing positive holding strength and grounding via captive hex head screws. The 1.625-inch length ensures optimal coverage and stability, while the zinc plating with chromate coating delivers enhanced corrosion resistance for extended service life. The insulated throat reduces wire pulling effort by up to 50%, improving installation efficiency and minimizing damage to conductors. Listed by U.L. (File No: E-23018) and certified by CSA (LR-2884, LR-4484), the TK121A meets U.L. 514B, CSA C22.2 No. 18, NFPA 70-1999 (ANSI), NEMA FB1, and Federal Specification W-F-408 standards. Compatible with standard EMT conduit systems, this coupling is ideal for applications requiring durable, code-compliant conduit connections in challenging environments. The hardened steel screws ensure long-term reliability, while the concrete-tight design prevents moisture and debris ingress, protecting electrical systems from corrosion and contamination.
  • Zinc-plated steel construction with chromate coating for corrosion resistance
  • Concrete-tight design prevents moisture and debris ingress
  • Captive hex head screws provide positive holding strength and grounding
  • Insulated throat reduces wire pulling effort by up to 50%
  • UL listed (E-23018) and CSA certified (LR-2884, LR-4484)

Specifications

Application
For use with EMT Conduit
Finish
Zinc Plated
Material
Steel
Material Quality
Steel
Special Features
Concrete tight when taped
Standard
UL E16592
Type
EMT Conduit Fittings
Package Dimensions (L x W x H)
6.25 IN x 4.75 IN x 3.25 IN
Package Dimensions (L x W x H)
15.875 cm x 12.065 cm x 8.255 cm
Package Weight (Imperial)
0.070 L
Package Weight (Metric)
0.032 kg
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Frequently Asked Questions

When is a sealing ring required for installation?

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

What certifications does this product have?

The product is UL Listed and CSA Certified.

Can excessive torque damage the product?

Excessive torque could damage the EMT or the housing of the product.

What is the recommended torque for installation?

Apply 35 in-lbs of torque onto the EMT during installation.

Can excessive torque damage the product?

Excessive torque could damage the EMT or the housing of the product.

When is a sealing ring required for installation?

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

What certifications does this product have?

The product is UL Listed and CSA Certified.

What is the recommended torque for installation?

Apply 35 in-lbs of torque onto the EMT during installation.

What throat options are available for this product?

The product is available with either an insulated or non-insulated throat.

Where are these EMT fittings manufactured?

These Steel EMT Fittings are Made in USA.

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