Norton 66254420002 Flap Disc 60 Grit Type 29 5 Inch

Product Description

The NORTON 66254420002 is a Type 29 zirconia alumina flap disc designed for aggressive stock removal and blending on metal surfaces. Built on a fiberglass backing plate, this disc runs at a maximum of 12,000 RPM and carries a medium, 60-grit abrasive coating suited for weld grinding, surface prep, and edge work. The Type 29 conical geometry positions the abrasive at an angle to the workpiece, improving contact pressure and cutting efficiency over flat Type 27 profiles. At 5 inches in diameter with a 7/8-inch arbor hole, it mounts directly on standard angle grinders common in metal fabrication and mechanical service work.

This flap disc is intended for use in metal fabrication shops, maintenance and repair operations, and field service environments where an angle grinder is the primary tool. It suits work on mild steel, stainless steel, and other ferrous metals where consistent material removal and a smooth finish are both required in a single pass. The medium 60-grit rating makes it a practical choice between coarse stock removal and fine finishing applications. A fiberglass backing provides rigidity while keeping disc weight low, and the blue disc color helps identify grit grade on a busy job site.

Key Features

• Type 29 conical profile increases abrasive contact angle for faster stock removal
• 60-grit zirconia alumina abrasive delivers medium-grade cut rate and surface finish
• Fiberglass backing plate provides rigidity and heat resistance during extended use
• Rated to 12,000 RPM for compatibility with standard 5-inch angle grinders
• 7/8-inch arbor hole fits common angle grinder spindle sizes without adapters
• Coated abrasive construction with non-trimmable flap arrangement for consistent geometry

Compatibility

Designed as a direct-mount replacement or service disc for standard 5-inch angle grinders equipped with a 7/8-inch arbor spindle.

Installation Notes

This disc is installed and serviced by metalworking tradespeople, fabricators, and maintenance mechanics using a 5-inch angle grinder. Before mounting, verify the grinder's no-load RPM rating does not exceed the disc maximum of 12,000 RPM. Always power down and disconnect the grinder before changing discs, and confirm the arbor nut is torqued per the grinder manufacturer's specification. Wear appropriate PPE including face shield, gloves, and hearing protection during operation.