Steel City TC717A 2-1/2 in. EMT Set-Screw Connector — Insulated, Zinc Plated Steel
The Steel City TC717A is a 2-1/2 inch EMT set-screw connector designed to join electrical metallic tubing (EMT) conduit to a box or enclosure. Built from zinc plated steel for strength and corrosion resistance, this connector features an insulated throat to protect wire insulation at the point of entry. UL Listed under File No. E-16592 and CSA certified, making it suitable for commercial and residential installations in dry locations. When taped, this connector is concrete-tight, broadening its application to concrete-encased installations.
Key Features
- Steel construction for strength and durability
- Zinc plated for corrosion protection
- Set-screw connection — fast, tool-friendly installation
- Insulated throat protects wire insulation at conduit entry
- Concrete-tight when taped
- UL Listed E-16592 (½” – 4″ range)
- CSA File No. LR-12798 certified (½” – 4″ range)
- For use in dry locations; outdoor use with insulated TC-7XX series
Technical Specifications
| Part Number | TC717A |
|---|---|
| Trade Size | 2-1/2 in. |
| Connection Type | Set-Screw |
| Conduit Type | EMT (Electrical Metallic Tubing) |
| Material | Zinc Plated Steel |
| Throat | Insulated |
| Thread (D) | 2½ – 8 npsm |
| Dimension A | 3.56 in. |
| Dimension B | 2.90 in. |
| Dimension C | 3.38 in. |
| UPC | 78599102534 |
| Country of Origin | China |
| Unit of Measure | 100-pack (100 EA) |
| Min. Order Qty | 1 (per 100-pack) |
Certifications & Standards
- UL Listed — File No. E-16592 (½” through 4″)
- CSA Certified — File No. LR-12798 (½” through 4″)
- Approved for concrete-tight applications when taped
- NEC compliant for electrical metallic tubing systems
Applications
- Connecting 2-1/2 in. EMT conduit to electrical enclosures and junction boxes
- Knockout and threaded entry connections
- Commercial and residential electrical installations
- Concrete-tight installations (when taped)
- Indoor dry locations
About Steel City
Steel City is a brand of ABB (Thomas & Betts), a global leader in electrical components and solutions. Steel City specializes in conduit fittings, electrical boxes, and raceway products for commercial and industrial applications. UL Listed products backed by ABB’s global manufacturing and engineering expertise.


