Norton 66254491774 Flap Disc 60 Grit Type 27 6 Inch

Product Description

The NORTON 66254491774 is a Type 27 zirconia alumina flap disc designed for aggressive material removal and surface blending on angle grinders. The disc measures 6 inches in diameter with a 5/8-11 arbor hole for direct mounting on standard grinders. Rated at a maximum of 10,200 RPM, it carries a medium-grade, 60-grit abrasive surface bonded to a fiberglass backing plate. Zirconia alumina abrasive delivers a self-sharpening cut that holds up under sustained grinding pressure on ferrous metals, weld seams, and fabricated steel components. Licensed tradespeople and fabrication workers in metal, HVAC ductwork, and structural applications rely on this type of disc for consistent stock removal and blending in a single operation.

This flap disc is suited for use on mild steel, stainless steel, and other ferrous metals where weld grinding, edge cleanup, and surface conditioning are required. The Type 27 flat profile keeps the grinding face flush to the workpiece, making it appropriate for flat surface work and broad blending passes. It is commonly used in sheet metal fabrication, structural steel work, and general-purpose metal finishing applications. Each package contains one disc, with a minimum order quantity of 10 units.

Key Features

• Zirconia alumina abrasive provides a self-sharpening, fast-cutting action for extended disc life
• Type 27 flat profile optimized for flat surface grinding and blending
• 60-grit medium grade balances material removal rate with surface finish quality
• Fiberglass backing plate adds rigidity and durability under load
• 5/8-11 arbor hole fits standard angle grinder spindles directly
• 10,200 RPM maximum speed rating compatible with common 6-inch angle grinders

Compatibility

Designed as an OEM-style replacement flap disc for standard angle grinders accepting a 5/8-11 arbor spindle and a 6-inch disc diameter.

Installation Notes

Installation and use should be performed by qualified personnel familiar with angle grinder safety practices. Verify the grinder's no-load RPM does not exceed the disc's 10,200 RPM maximum rating before mounting. Power down and disconnect the grinder from all power sources before mounting or removing the disc. Always use the appropriate guard for the disc type and inspect the disc for cracks or damage before each use.