Southwire 170C Nylon Knockout Bushing 1/2 Inch Snap-in

Product Description

The SOUTHWIRE 170C is a 1/2-inch snap-in knockout bushing made from 6/6 nylon, designed for use in electrical boxes, panels, and enclosures. It installs directly into a standard 1/2-inch knockout opening without tools, snapping firmly into place to protect wiring from sharp metal edges. The 6/6 nylon construction keeps the bushing lightweight and corrosion-proof, making it a reliable choice for sealing unused or newly modified knockout openings. Electricians reach for this type of bushing when closing out vacancies left by maintenance work or system changes. The smooth, rounded inner surface reduces friction during wire pulling, speeding up the installation process.

The 170C is suited for residential and light commercial electrical work wherever knockout openings need to be dressed or protected. Common install locations include junction boxes, outlet boxes, load centers, and metal enclosures with 1/2-inch knockouts. It is particularly useful during panel modifications or equipment retrofits where open knockouts must be closed to maintain code compliance and protect conductors from abrasion. Any licensed electrician handling rough-in or finish electrical work will find this bushing a standard consumable on the job.

Key Features

• Snap-in design installs into 1/2-inch knockout openings without tools
• 6/6 nylon construction is lightweight, corrosion-proof, and resistant to wear and abrasion
• Smooth rounded inner surface reduces friction for easier wire pulling
• Resistant to damage from vibration, suitable for environments with mechanical movement
• Closes unused or vacated knockout openings left by maintenance or system modifications

Compatibility

Designed as an OEM-style snap-in bushing for standard 1/2-inch knockout openings in electrical boxes and enclosures.

Installation Notes

Installation is performed by licensed electricians following applicable NEC requirements for protecting conductors at knockout openings. De-energize and lock out the circuit or enclosure before servicing any panel or junction box. Align the bushing with the knockout opening and press firmly until it snaps into place. Inspect the fit to confirm the bushing is fully seated and flush before pulling wire.

Technical Specifications

• Material: 6/6 Nylon
• Knockout Size: 1/2 inch
• Installation Type: Snap-In
• Application: Electrical boxes and enclosures

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 170C