Norton 666233-57281 Aluminum Oxide Fiber Disc 100 Grit 25pk

Product Description

The NORTON 666233-57281 is an aluminum oxide fiber disc designed for aggressive material removal on metal surfaces. Measuring 5 inches in diameter with a 7/8-inch arbor hole, this disc mounts directly to standard right-angle grinders used in fabrication, welding, and general metalworking applications. The 100-grit aluminum oxide abrasive delivers consistent stock removal and surface blending, making it well suited for finishing passes after weld grinding or for preparing surfaces before coating. Discs are sold in packs of 25, supporting high-volume shop or job-site use without frequent reordering.

This fiber disc is intended for use in metal fabrication shops, structural steel work, HVAC duct fabrication, plumbing rough-in metalwork, and general trade applications where a durable, resin-bonded abrasive disc is required. The 100-grit rating positions it as a finishing and blending disc rather than a heavy stock-removal tool, making it appropriate for technicians who need a controlled cut rate on ferrous and non-ferrous metals. Each disc in the pack is individually usable, allowing a single pack to support multiple technicians or multiple work sessions.

Key Features

• 100-grit aluminum oxide abrasive for controlled finishing and surface blending
• 5-inch diameter with 7/8-inch arbor hole fits standard right-angle grinders
• Fiber backing provides rigidity and resistance to tearing under load
• Pack of 25 discs reduces restocking frequency for busy shops
• Merit FX370 series construction for consistent performance across the pack

Compatibility

Designed for use with standard 5-inch right-angle grinders and disc sanders fitted with a 7/8-inch arbor. Verify that the tool's maximum RPM rating meets or exceeds the disc's rated speed before use.

Installation Notes

Installation and use should be performed by qualified personnel familiar with abrasive disc safety practices. Before mounting, confirm the grinder is unplugged or the power source is fully de-energized. Inspect each disc for cracks, tears, or delamination before use and discard any damaged disc immediately. Always use the appropriate backing pad for fiber discs and ensure the arbor nut is tightened securely before operating the grinder.

Technical Specifications

• Abrasive Material: Aluminum Oxide
• Series: Merit FX370
• Disc Diameter: 5 inches
• Arbor Hole Size: 7/8 inch
• Grit: 100
• Packaging Quantity: 25 discs per pack
• Unit of Measure: Each
• Minimum Order Quantity: 25

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 666233-57281