Dewalt DW8251 Flap Disc 4.5x7/8 Inches Z60 T27

Product Description

The DEWALT DW8251 is a Type 27 flap disc engineered for aggressive material removal and blending on metal surfaces. Measuring 4.5 inches in diameter with a 7/8-inch arbor hole, it mounts directly to standard 4.5-inch angle grinders. The Z60 designation indicates a zirconia alumina abrasive grain at 60-grit, a coarseness suited for weld blending, surface preparation, and stock removal on steel and other ferrous metals. The Type 27 (flat) profile keeps the disc parallel to the work surface, making it the right choice for flat stock and large surface areas. Trade professionals in fabrication, ironwork, and HVAC sheet metal work reach for this disc when speed and finish quality both matter.

This flap disc is used in commercial and industrial settings as well as residential fabrication shops wherever an angle grinder is the primary tool. Typical applications include weld seam blending, edge deburring, rust and scale removal, and surface conditioning on structural steel, pipe, and plate. The 60-grit zirconia grain cuts fast while leaving a consistent scratch pattern suitable for follow-on finishing steps.

Key Features

• Z60 zirconia alumina abrasive grain for fast, aggressive stock removal
• Type 27 flat profile optimized for flat surface and weld blending work
• 4.5-inch diameter fits standard 4.5-inch angle grinders
• 7/8-inch arbor hole for direct mount without a reducer bushing
• Overlapping abrasive flaps extend disc life and provide consistent cut rate as the disc wears

Compatibility

Designed as a direct-mount replacement flap disc for standard 4.5-inch angle grinders accepting a 7/8-inch arbor.

Installation Notes

Flap discs are installed and serviced by metalworkers, fabricators, and trade professionals using 4.5-inch angle grinders. Before mounting, ensure the grinder is unplugged or the battery is removed and confirm the grinder RPM rating meets or exceeds the disc RPM rating printed on the hub. Inspect the disc for damage before each use and never use a damaged or delaminated disc. Always wear appropriate PPE including face shield, gloves, and hearing protection when operating angle grinders.