Arlington NM900 Nonmetallic Snap-in Knockout Bushing

Product Description

The ARLINGTON NM900 is a nonmetallic snap-in knockout bushing designed to seal and protect wiring at 1/2-inch knockout openings in electrical enclosures, panels, and junction boxes. Made from a durable nonmetallic material and finished in black, this bushing snaps directly into the knockout hole without tools, providing a clean, secure fit that protects conductor insulation from sharp metal edges. Electricians install this bushing during rough-in and finish work wherever nonmetallic sheathed cable or conduit enters a box through a standard 1/2-inch knockout.

This bushing suits residential and light commercial electrical installations where speed and code compliance at knockout openings are priorities. It is appropriate for use in outlet boxes, junction boxes, load centers, and similar enclosures that feature standard 1/2-inch knockouts. The snap-in design eliminates the need for separate connectors or locknuts in applicable installations, making it a common choice for high-volume rough-in work.

Key Features

• Snap-in installation requires no tools and seats securely in standard 1/2-inch knockouts
• Nonmetallic construction resists corrosion and provides electrical isolation at the entry point
• Black color finish for consistent appearance in finished enclosures
• Protects wire and cable insulation from sharp knockout edges
• Compact, low-profile design fits flush within the knockout opening

Compatibility

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

Installation Notes

Installation is performed by a licensed electrician in accordance with applicable NEC requirements. De-energize the enclosure and verify absence of voltage before working inside any panel or junction box. Press the NM900 firmly into the knockout opening until the retaining tabs snap into place. Do not force oversized cable through the bushing opening, as this may dislodge the bushing or damage conductor insulation.

Technical Specifications

• Trade Size: 1/2 inch
• Color: Black
• Material: Nonmetallic
• UPC: 018997540003

Standard Information

• Brand: ARLINGTON
• Manufacturer Part Number: NM900