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Norton 4-1/2 in. D X 7/8 in. Zirconia Aluminum Oxide Flap Disc 40 Grit

Norton 4-1/2 in. D X 7/8 in. Zirconia Aluminum Oxide Flap Disc 40 Grit

The Norton 4-1/2 in. D x 7/8 in. Zirconia Aluminum Oxide Flap Disc 40 Grit is built for serious metal work. This single-disc, extra-coarse flap disc combines rugged zirconia alumin…

Norton MPN 66254419978
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Typical Store Price i
Typical store price: low $5.99, average $6.99
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About Product Overview

The Norton 4-1/2 in. D x 7/8 in. Zirconia Aluminum Oxide Flap Disc 40 Grit is built for serious metal work. This single-disc, extra-coarse flap disc combines rugged zirconia aluminum oxide with a coarse 40 grit to deliver fast stock removal, smooth blending, and long-lasting performance on tough metals. With a 4-1/2" diameter and a 7/8" arbor, it fits standard angle grinders for quick setups in busy shops and garages.

Why it stands out:

  • Aggressive stock removal thanks to the 40-grit zirconia aluminum oxide blend, designed to eat through welds, rust, and rough surfaces without bogging down.
  • Durable, self-sharpening action from ceramic-infused abrasive that stays cooler and lasts longer under heavy grinding compared with traditional aluminum oxide discs.
  • High-performance for metal finishing ideal for prep work, deburring, edge blending, and shaping on steel, stainless steel, and other hard metals.
  • Reliable fit with a standard 7/8" arbor on a 4-1/2" disc, ensuring compatibility with most common angle grinders and quick changeovers.
  • Maximum efficiency rated up to 13300 RPM, enabling rapid material removal while maintaining control and reducing heat buildup.
  • One-disc practicality sold as a single, dependable disc ready for immediate use in demanding fabrication and repair tasks.

Practical use cases

  • Heavy weld grinding and blending on steel frames, exhaust components, and machinery housings.
  • Rust removal and surface contouring on industrial metal parts prior to coating or welding.
  • Rim and edge deburring on fabricated metal assemblies where a smoother finish is needed before further processing.
  • Quick surface prep for repainting or coating projects where consistent material removal is essential.

Who benefits most

  • Professional metal fabricators and welding shops needing reliable, aggressive discs for daily stock removal.
  • Automotive repair and maintenance technicians working on chassis, exhaust, or frame components.
  • DIY enthusiasts tackling thick metal projects or heavy rust and weld cleanup at home or in a workshop.

Tips for best results

  • Use with a compatible angle grinder and a steady, light-to-moderate pressure to avoid gouging.
  • Keep the disc moving in a smooth, overlapping pattern to achieve an even finish and prevent heat buildup.
  • Pair with an appropriate backing pad if your grinder setup supports it to maximize contact and stabilize cutting action.
  • Always wear eye, face, and hand protection; ensure proper ventilation when grinding metal.

Specifications
Diameter: 4-1/2 in.
Arbor: 7/8 in.
Grit: 40 (Extra Coarse)
Material: Zirconia Aluminum Oxide
Maximum Speed: 13300 RPM
Package: 1 disc

The Details Specifications

Brand Norton
SKU 2851111
UPC 662544199789
Unit 0
Case Pack Quantity 10 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 1 × 5 × 5
Weight 0 lbs
Cubic Feet 0.01247 ft³
Country of Origin FRANCE
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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