Arc Abrasives 10824AF Flap Disc 4.5in Type 29 40 Grit

Product Description

The ARC ABRASIVES 10824AF is a Type 29 flap disc designed for general-purpose grinding and blending applications. Measuring 4.5 inches in diameter with a 7/8-inch arbor hole, this disc runs at a conical angle that increases contact area and improves stock removal on contoured and flat surfaces. The 40-grit abrasive is suited for aggressive material removal, making it a practical choice for fabricators, welders, and metalworkers who need a reliable workhorse disc. Cotton backing reinforces the flap assembly, contributing to strength and durability through the full life of the disc.

This flap disc is built for use on mild steel, aluminum, and composite materials, covering the most common substrates found in fabrication shops, maintenance facilities, and structural steel work. The Type 29 profile — a depressed-center design — is particularly effective for blending welds, removing scale, and surface prep on workpieces where a flat Type 27 disc would limit access or angle. It is a standard fit for 4.5-inch angle grinders used daily in the trades.

Key Features

• Type 29 conical profile increases surface contact for faster blending and stock removal
• 40-grit abrasive delivers aggressive cutting action on metal and composites
• Cotton backing adds structural strength and extends disc service life
• 4.5-inch diameter with 7/8-inch arbor fits standard angle grinders
• Suitable for mild steel, aluminum, and composite substrates

Compatibility

Designed as a general-purpose replacement flap disc for 4.5-inch angle grinders accepting a 7/8-inch arbor, common across professional-grade and contractor-grade tools in metalworking and fabrication applications.

Installation Notes

Mounting and use should follow the grinder manufacturer's maximum RPM rating — never exceed the disc's rated speed. Ensure the grinder guard is in place before operation, and confirm the arbor nut is seated and tightened to the tool manufacturer's specification. Wear appropriate eye, face, and hand protection per ANSI Z87.1 standards. Inspect the disc for damage before each use and discard any disc showing cracks, tears, or delamination.

Technical Specifications

• Diameter: 4.5 inches
• Arbor Size: 7/8 inches
• Disc Type: Type 29
• Grit: 40
• Backing Material: Cotton
• Weight: 0.04 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: ARC ABRASIVES
• Manufacturer Part Number: 10824AF