Nsi Industries 257 Steel Compression Connector 3 in

Product Description

The NSI INDUSTRIES 257 is a 3-inch steel compression connector designed for securing metallic conduit to enclosures, junction boxes, and panel knockouts. Compression connectors of this type create a mechanically secure, raintight-rated connection without threading, relying on a compression nut and ring to clamp the conduit in place. This fitting is appropriate for use in electrical rough-in and finish work where a reliable conduit termination is required. Licensed electricians and electrical contractors install this type of connector as part of conduit systems in both new construction and retrofit applications.

This connector is suited for use with 3-inch conduit in commercial and industrial electrical installations where a steel compression fitting is specified. It is appropriate for use in applications requiring secure conduit terminations at enclosures, panelboards, and junction boxes. The steel construction makes it suitable for environments where durability and mechanical integrity are priorities.

Key Features

• 3-inch trade size fits standard 3-inch conduit applications
• Steel construction provides mechanical durability and strength
• Compression-style design allows secure termination without threading the conduit
• Compatible with standard knockout openings on enclosures and panelboards

Compatibility

Designed as an OEM-style replacement or standard-fit connector for 3-inch steel conduit systems in commercial and industrial electrical installations.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize all circuits in the affected enclosure or panelboard before installing or replacing conduit fittings. Hand-tighten the compression nut fully, then use an appropriate wrench to achieve a secure mechanical connection. Inspect the conduit end for burrs or damage before insertion to ensure a proper seal and fit.

Technical Specifications

• Trade Size: 3 inches
• Material: Steel
• Connection Type: Compression
• Package Dimensions (L x W x H): 7.75 inches x 6 inches x 5.62 inches
• UPC: 78174700257

Standard Information

• Brand: NSI INDUSTRIES
• Manufacturer Part Number: 257