Norton 66254491777 Flap Disc 60 Grit Type 29 6 Inches

Product Description

The NORTON 66254491777 is a Type 29 zirconia alumina flap disc designed for aggressive grinding and blending on metal surfaces. It features a 6-inch diameter with a 7/8-inch arbor hole and runs at a maximum of 10,200 RPM. The fiberglass backing provides structural rigidity under load, while the zirconia alumina abrasive delivers consistent stock removal at 60 grit (medium grade). This disc is suited for angle grinder use in fabrication shops, field welding operations, and metal finishing work performed by ironworkers, pipefitters, and general metalworkers.

The Type 29 conical shape positions the abrasive face at an angle to the workpiece, which increases surface contact and improves material removal rates compared to a flat Type 27 disc. This geometry makes the 66254491777 well suited for weld blending, deburring, and surface prep on mild steel, stainless steel, and similar ferrous materials. The blue fiberglass backing resists heat buildup and flexing during extended grinding passes. Minimum order quantity is 10 units, sold individually per package.

Key Features

• Type 29 conical profile for aggressive stock removal and weld blending
• Zirconia alumina abrasive for long-lasting cut rate on ferrous metals
• 60 grit medium grade balances material removal with surface finish
• Fiberglass backing provides rigidity and heat resistance under load
• 10,200 RPM maximum speed rating for standard 6-inch angle grinders
• 7/8-inch arbor hole fits standard angle grinder spindles

Compatibility

Designed as an OEM-style replacement flap disc for 6-inch angle grinders accepting a 7/8-inch arbor attachment.

Installation Notes

Installation of flap discs should be performed by qualified personnel familiar with angle grinder safety practices. Always power down and disconnect the grinder before mounting or removing a disc. Verify the tool spindle speed does not exceed the disc maximum RPM rating before operation. Operators should wear appropriate PPE including face shield, gloves, and hearing protection in accordance with applicable OSHA and ANSI B11 guidelines.