Arlington NM904 Snap-in Knockout Bushing 1-1/2 in

Product Description

The ARLINGTON NM904 is a non-metallic snap-in knockout bushing designed to protect wire and cable at panel knockouts and junction box openings. Made from black non-metallic material, this bushing snaps into standard 1-1/2-inch knockouts without tools, providing a clean, smooth edge that prevents insulation damage on conductors passing through. Electricians use this fitting during rough-in and finish work wherever wiring must pass through a knockout cleanly and efficiently.

The NM904 is suited for residential and light commercial electrical installations. It is commonly installed in loadcenters, junction boxes, and enclosures where non-metallic wiring methods require a secure, low-profile knockout protection point. The snap-in design speeds installation on new construction and retrofit jobs alike, eliminating the need for separate locknuts or connectors in applications where a protected passthrough is all that is required.

Key Features

• Snap-in installation requires no tools and no separate hardware
• Non-metallic construction eliminates corrosion concerns in damp or humid environments
• Black color finish for a clean, finished appearance in panels and enclosures
• Fits standard 1-1/2-inch trade size knockouts
• Smooth interior edge protects wire and cable insulation from abrasion

Compatibility

Designed as an OEM-style replacement and standard-fit bushing for 1-1/2-inch trade size knockouts in electrical enclosures, loadcenters, and junction boxes.

Installation Notes

Installation is performed by licensed electricians in accordance with applicable NEC requirements. De-energize the panel or enclosure completely before working near any knockout opening. Press the NM904 firmly into the knockout until the retaining tabs snap into place. Verify the bushing is fully seated and secure before routing conductors through the opening.

Technical Specifications

• Trade Size: 1-1/2 inches
• Material: Non-metallic
• Color: Black
• UPC: 018997540041

Standard Information

• Brand: ARLINGTON
• Manufacturer Part Number: NM904