Southwire 489 3-1/2 Inch Male Clamp Back

Product Description

The SOUTHWIRE 489 is a 3-1/2 inch male clamp back fitting designed for use in electrical conduit installations. This type of fitting secures conduit to enclosures, panels, or junction boxes by clamping around the conduit body and threading into a knockout opening. Licensed electricians and experienced electrical contractors install this hardware as part of standard raceway assemblies in commercial and residential wiring systems. At 14 pounds, this is a bulk or multi-unit package suited for job-site supply stocking.

This male clamp back is sized at 3-1/2 inches, making it appropriate for larger conduit runs typically found in commercial electrical distribution, industrial panel feeds, and heavy-duty branch circuit installations. It is used where a secure, mechanically sound conduit connection to an enclosure is required. The clamp-back design provides a reliable grip on the conduit without requiring adhesives or additional hardware beyond standard installation practice.

Key Features

• 3-1/2 inch male clamp back configuration for large-diameter conduit connections
• Male threading allows direct engagement with standard knockout openings on enclosures and panels
• Clamp-back design mechanically secures conduit without additional fasteners
• Bulk package weight of 14 pounds suitable for stocking on active job sites

Compatibility

Designed as an OEM-style replacement or standard supply fitting for 3-1/2 inch conduit systems in commercial and industrial electrical installations.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize all circuits and lock out the panel before making any connections at an enclosure or junction box. Ensure the knockout opening matches the 3-1/2 inch fitting size before installation. Use appropriate conduit wrenches to achieve a secure, rattle-free connection without over-tightening and damaging the fitting threads.

Technical Specifications

• Size: 3-1/2 inches
• Configuration: Male Clamp Back
• Weight: 14 pounds
• UPC: 75133814590

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 489