Dewalt DW8321 Type 29 Flap Disc 7in 36 Grit Zirconia

Product Description

The DEWALT DW8321 is a Type 29 zirconia flap disc designed for aggressive grinding and blending on metal surfaces. At 7 inches in diameter with a 7/8-inch arbor hole, this disc mounts to standard large-angle grinders used in fabrication, welding, and metalworking applications. The 36-grit zirconia abrasive provides coarse stock removal suitable for weld seam grinding, surface prep, and deburring on steel and other ferrous metals. Weighing 0.5 pounds, the disc is straightforward to handle and swap during production work. The Type 29 conical profile increases surface contact on flat and contoured workpieces, improving material removal rate compared to a flat Type 27 disc.

This flap disc is suited for professional metalworkers, fabricators, welders, and maintenance trades who need consistent, high-rate grinding performance from a large-diameter disc. The 7-inch format is common in heavy fabrication shops and structural steel work where larger grinders are standard equipment. The 36-grit rating makes it appropriate for initial weld grinding and heavy stock removal rather than finishing passes. It is sold individually (each) with a minimum order quantity of 10 units, making it practical for shop stocking.

Key Features

• Type 29 conical flap disc profile for increased surface contact on flat and curved workpieces
• 36-grit zirconia abrasive delivers coarse, high-rate stock removal on steel and ferrous metals
• 7-inch diameter with 7/8-inch arbor fits standard large-angle grinders
• Lightweight at 0.5 pounds for extended use on large-angle grinders
• Zirconia grain self-sharpens during use, extending disc service life compared to aluminum oxide

Compatibility

Designed as an OEM-style replacement or standard consumable for 7-inch large-angle grinders accepting a 7/8-inch arbor.

Installation Notes

Installation should be performed by a qualified operator familiar with angle grinder safety. Always disconnect or power down the grinder before mounting or removing a flap disc. Confirm the grinder RPM rating meets or exceeds the disc's maximum RPM rating before use, and ensure the flange and arbor nut are properly torqued per the grinder manufacturer's specifications. Wear appropriate PPE including a face shield, gloves, and hearing protection during operation.

Technical Specifications

• Disc Diameter: 7 inches
• Arbor Size: 7/8 inches
• Grit: 36
• Abrasive Material: Zirconia
• Disc Type: Type 29
• Weight: 0.5 pounds
• UPC: 028877310534
• Sold As: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: DW8321