ABB Steel City Set-Screw EMT Coupling — 1/2 in. (Model TK121A)
The ABB Steel City TK121A is a zinc-plated steel set-screw coupling designed to join two sections of 1/2-inch EMT (electrical metallic tubing) conduit. It provides a concrete-tight connection when taped and meets UL listing E16592, making it suitable for a wide range of commercial and industrial electrical installations.
Key Features
- Set screw connection for secure, tool-fastened joining of EMT conduit
- Zinc plated steel construction for corrosion resistance and durability
- Concrete tight when taped — suitable for concrete encasement applications
- Designed for 1/2 inch EMT conduit
- UL Listed E16592
Specifications
- Manufacturer: ABB (Thomas and Betts)
- Brand: Steel City
- Model: TK121A
- UPC: 78599102388
- Conduit Type: EMT
- Conduit Size: 1/2 in.
- Connection Type: Set Screw
- Material: Zinc Plated Steel
- Listing: UL E16592
Applications
Used by electricians and contractors for joining EMT conduit runs in commercial, industrial, and residential wiring installations. Suitable for use in dry, damp, and concrete-encased locations when taped. Commonly used in new construction, tenant improvements, and electrical system retrofits requiring reliable EMT conduit couplings.




