Norton 66254420012 Flap Disc 7in 60 Grit Type 29

Product Description

The NORTON 66254420012 is a Powerflex Type 29 flap disc designed for aggressive grinding and blending on metal surfaces. At 7 inches in diameter with a 5/8-11 arbor thread, it mounts directly to standard angle grinders used in fabrication, welding, and structural metalwork. The 60-grit abrasive provides a medium-coarse cut rate suited for weld blending, surface conditioning, and stock removal where a flat wheel would cause excessive gouging. The Type 29 conical geometry keeps the abrasive cloth at an angle to the workpiece, allowing more surface contact and a faster cut than a flat Type 27 disc.

This disc is sold in cases of 10 and is intended for professional metalworking applications including weld seam removal, deburring, and surface prep before coating or inspection. It is commonly used in structural steel shops, pipeline fabrication, shipbuilding, and general manufacturing environments. The Powerflex backing provides flexibility across both flat and contoured workpieces, making it practical for work that requires transitioning between flat stock and curved sections in a single pass.

Key Features

• Type 29 conical profile increases surface contact for faster material removal compared to Type 27
• 60-grit abrasive suitable for weld blending, deburring, and aggressive stock removal
• 7-inch diameter with 5/8-11 arbor fits standard angle grinders without adapters
• Powerflex backing accommodates both flat and contoured surface grinding
• Sold in a case quantity of 10 units for shop and field use

Compatibility

Designed for use on standard 7-inch angle grinders with a 5/8-11 threaded spindle. Confirm your grinder's rated disc diameter and RPM rating meets or exceeds the disc's maximum operating speed before use.

Installation Notes

Installation and use should be performed by qualified personnel familiar with angle grinder safety practices and applicable ANSI B7.1 standards for abrasive wheel use. Always inspect the disc for damage before mounting and never exceed the maximum RPM stamped on the disc. Secure the arbor nut with the correct spanner wrench and ensure the guard is in place before powering on the grinder. Wear appropriate PPE including face shield, gloves, and hearing protection during operation.

Technical Specifications

• Diameter: 7 inches
• Arbor Size: 5/8-11
• Grit: 60
• Disc Type: Type 29
• Backing: Powerflex
• Case Quantity: 10 each
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 66254420012