Dewalt DW8306 Flap Disc 4-1/2 in 7/8 in 40 Grit

Product Description

The DEWALT DW8306 is a Type 27 flap disc designed for use with 4-1/2 inch angle grinders. It features a 40-grit abrasive surface bonded to overlapping cloth flaps mounted on a fiberglass backing plate. The 40-grit rating makes it suited for aggressive material removal, weld blending, and surface conditioning on steel, stainless steel, and other metals. The 7/8 inch arbor hole fits standard angle grinder spindles. Tradespeople in fabrication, welding, and general metalwork rely on this disc for fast stock removal before transitioning to finer finishing steps.

The DW8306 is used in metal fabrication shops, welding operations, and on-site construction work. It is commonly used to remove rust, mill scale, weld spatter, and burrs from steel and iron surfaces. The 40-grit cut rate is appropriate for initial material removal and weld seam blending where surface finish requirements are not yet critical. It is sold individually but typically available in box quantities of 10.

Key Features

• 4-1/2 inch disc diameter fits standard angle grinders
• 7/8 inch arbor hole for direct spindle mounting without a reducing bushing
• 40-grit abrasive for aggressive stock removal and weld blending
• Overlapping flap construction provides consistent cut rate as the disc wears
• Fiberglass backing plate supports flat and Type 27 grinding geometry

Compatibility

Designed as a direct-mount replacement flap disc for 4-1/2 inch angle grinders with a 7/8 inch spindle arbor.

Installation Notes

Install and replace flap discs with the grinder unplugged or battery removed. Inspect the disc for cracks, tears, or delamination before mounting. Secure the disc to the grinder spindle according to the grinder manufacturer torque guidance for the lock nut. Always wear appropriate eye protection and a face shield when operating angle grinders with abrasive discs, in accordance with ANSI B11 and applicable site safety requirements.

Technical Specifications

• Disc Diameter: 4-1/2 inches
• Arbor Size: 7/8 inch
• Grit: 40
• Weight: 0.23 pounds
• Sold As: Each

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: DW8306