
Contact for Pricing
Minimum Qty: 25
Multiplier: 25
*Contact for lower quantities*
Overview
- Three-piece steel design for secure conduit connections
- 3/4 inch size for standard conduit systems
- Corrosion-resistant and durable for harsh environments
- Simplifies installation and maintenance
- Meets industry standards for code compliance
Specifications
Application | Used to join lengths of rigid or IMC to EMT. Coupling internally threaded for rigid / IMC. Compression type for EMT. Concrete-tight. |
Connector Type | Combination |
Material Quality | Steel |
Special Features | Concrete-tight |
Trade Size | 0.75 in |
Type | Coupling |
Package Weight (Imperial) | 0.182 L |
Package Weight (Metric) | 0.083 kg |
Similar Products

291-CDC
Type: Compression Transition
Standard: UL-514B
Special Features: Concrete-Tight. Dry Locations Only

291-DC
Special Features: Furnished with 2-way Phillips/Slotted Head Screw
Material Quality: Zinc Die Cast
Material: Zinc Die Cast

291-RT
Special Features: Raintight /Wet Location Seal
Standard: cETLus
Material Quality: High Strength Zinc Alloy
Frequently Asked Questions
What is the trade size of the 291-MS coupling?
The trade size of the 291-MS coupling is 3/4 inch.
What materials is the 291-MS coupling made from?
The 291-MS coupling is made from steel and has a zinc electro-plate finish.
What is the purpose of the 291-MS coupling?
The coupling is used to join lengths of rigid or IMC to EMT and is concrete-tight.
Frequently Asked Questions about NSi Industries
What technical support does NSi Industries offer?
NSi Industries offers dedicated technical support through their toll-free technical support line at 888.500.4598. They are committed to customer satisfaction and promise to make every reasonable effort to remedy any product or service issues. Additionally, customers can contact their customer service team at 800.321.5847 or email [email protected] for further technical assistance.
What are the key features of NSi Industries products?
NSi Industries products feature exceptional versatility, reliability, and safety across multiple industrial automation categories. Key features include insulation piercing connectors with no wire stripping required, watertight and corrosion-free designs, wide wire range compatibility (from #14 AWG to 750 MCM), and the ability to install on energized conductors. Their product lines like Easy-Tap™ Connectors and TORK® Digital Timers demonstrate advanced capabilities such as turbo spacers, double shear-head bolts, astronomic scheduling, and enhanced switching technologies.
What environmental ratings do NSi Industries products have?
NSi Industries enclosures feature robust environmental ratings, including IEC 60529 IP66 certification, NEMA Type 1, 2, 3, 4, 4X, 12, and 13 ratings, and UL/CSA standards. Their products are designed for both indoor and outdoor applications, with protection against dust, water, corrosion, and extreme temperatures ranging from -40°F to 266°F.
How are NSi Industries products typically installed?
NSi Industries products are typically installed using detailed mechanical and digital wiring diagrams that specify precise connection methods for various voltage configurations (120V, 208V, 240V, 277V, 480V). Installation involves carefully following product-specific wiring schematics, which include clear terminal block connections, ground wire specifications, and phase alignment requirements. Professional electricians and technicians should reference the specific product's wiring diagram to ensure correct installation and electrical compliance.
What industries and applications are NSi Industries products used for?
NSi Industries provides electrical and automation products for diverse industrial applications, including lighting control, electrical enclosures, wire management, connectors, and sensor technologies. Their product lines serve commercial, industrial, and infrastructure markets with solutions for electrical infrastructure, control systems, and safety-critical environments.
What are the main product lines offered by NSi Industries?
NSi Industries offers a comprehensive range of industrial products including TORK® Photocontrols, Polaris™ Lighting Controls, Easy-Twist™ Grounding Solutions, Miniterms, Cable Ties, Connectors, Enclosures, Occupancy Sensors, and Wire Management systems. Their product lines span electrical components, control devices, and industrial automation accessories designed for diverse applications in commercial and industrial settings.
What accessories are available for NSi Industries products?
NSi Industries offers a range of accessories for their product lines, including photocontrol accessories like replacement caps, mounting brackets, and receptacles. Specific accessories include shorting caps, open caps, 3-pin and 7-pin receptacles, and utility mounting brackets for conduit photocontrols. For specialized applications, NSi recommends contacting their customer service team to discuss custom accessory needs.


