Norton 66254419987 Powerflex Flap Disc 80 Grit Type 29

Product Description

The NORTON 66254419987 is a Powerflex Type 29 flap disc designed for aggressive stock removal and surface blending on metal. The conical Type 29 profile presents the abrasive at an optimum working angle, allowing consistent contact across flat and contoured workpiece surfaces. At 80 grit, this disc cuts through weld seams, mill scale, and surface rust efficiently while leaving a finish suitable for follow-up grinding or coating prep. The 4.5-inch diameter and 7/8-inch arbor bore fit standard right-angle grinders used daily in fabrication, welding, and metalworking trades.

This flap disc is suited for use on mild steel, stainless steel, and other ferrous metals in fabrication shops, structural steel work, and industrial maintenance applications. The Powerflex backing material is engineered to flex under load, helping the disc conform to irregular or curved surfaces without loading up. It is a practical choice for welders, pipefitters, ironworkers, and maintenance technicians who need a single disc to handle both material removal and surface preparation in one step.

Key Features

• Type 29 conical profile for aggressive cutting at an optimal grind angle
• 80 grit abrasive for rapid stock removal and weld blending
• 4.5-inch diameter with 7/8-inch arbor bore fits standard right-angle grinders
• Powerflex backing flexes to conform to curved and irregular surfaces
• Combines grinding and finishing in a single disc, reducing disc changes
• Sold in a case quantity of 10 discs

Compatibility

Designed for use with right-angle grinders accepting a 4.5-inch disc with a 7/8-inch arbor bore. Suitable for grinding and surface preparation on ferrous metals including mild steel and stainless steel.

Installation Notes

Flap discs must be installed and operated by personnel familiar with angle grinder safety practices. Verify that the grinder RPM rating meets or exceeds the disc RPM rating before mounting. Inspect the disc for damage before each use and never use a disc that shows cracking, delamination, or missing flaps. Always use the appropriate guard and personal protective equipment including eye and face protection when operating.

Technical Specifications

• Disc Type: Type 29 Flap Disc
• Diameter: 4.5 inches
• Arbor Bore: 7/8 inch
• Grit: 80
• Backing: Powerflex
• Case Quantity: 10 each
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 66254419987