Norton 666233-53313 Aluminum Oxide Fiber Disc 100 Grit

Product Description

The NORTON 666233-53313 is an aluminum oxide fiber disc designed for aggressive material removal and surface conditioning on metal, weld seams, and other hard substrates. Sold in a package of 25 discs, each disc measures 4.5 inches in diameter with a 0.875-inch arbor hole and carries a 100 grit rating, placing it in the medium-fine range suitable for blending, deburring, and light stock removal. The fiber backing provides rigidity and heat resistance during high-speed grinding operations. These discs are installed by metal fabricators, pipefitters, and general trade professionals using standard angle grinders.

These fiber discs are suited for use in metal fabrication shops, maintenance and repair operations, and field welding applications. The 100 grit designation makes them effective for finishing passes after heavier grinding, removing surface scale, and smoothing weld beads before inspection or coating. The 4.5-inch diameter fits the most common angle grinder size used in trade and industrial settings. Each unit is sold individually, and the minimum purchase quantity is 25 discs per order.

Key Features

• Aluminum oxide abrasive grain for consistent cut rate on ferrous and non-ferrous metals
• 100 grit for blending, deburring, and weld seam finishing
• 4.5-inch diameter with 0.875-inch arbor hole fits standard angle grinders
• Rigid fiber backing resists flexing and heat buildup during use
• Packaged in quantities of 25 discs per order

Compatibility

Designed as an OEM-style replacement fiber disc compatible with standard 4.5-inch angle grinders accepting a 0.875-inch arbor. No specific model compatibility was stated in the product data.

Installation Notes

Fiber discs are installed and changed by the operator using a backing pad and appropriate wrench for the grinder arbor nut. Always power down and disconnect the grinder from its power source before changing discs. Inspect the disc for cracks or damage before mounting, and confirm the grinder RPM rating meets or exceeds the disc maximum speed rating. Eye protection and gloves are required during grinding operations per standard shop safety practices.

Technical Specifications

• Abrasive Material: Aluminum Oxide
• Grit: 100
• Disc Diameter: 4.5 inches
• Arbor Hole Diameter: 0.875 inches
• Package Quantity: 25 discs
• Unit of Measure: Each

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 666233-53313