Dewalt DW8330 Type 29 Flap Disc 7 in 80 Grit Zirconia

Product Description

The DEWALT DW8330 is a Type 29 zirconia flap disc designed for aggressive material removal and blending on metal surfaces. Measuring 7 inches in diameter with a 5/8 inches-11 threaded hub, this disc mounts directly to large angle grinders used in fabrication, welding, and heavy grinding applications. The 80 grit zirconia abrasive delivers a balance of cut rate and surface finish, making it well suited for weld blending, edge grinding, and stock removal on steel and stainless steel. The Type 29 conical profile increases abrasive contact area on flat workpieces, improving both efficiency and disc longevity. Each disc weighs 0.81 pounds. Sold individually.

This disc is used in metal fabrication shops, structural steel work, pipe welding, and general industrial grinding. The 7-inch diameter and 5/8 inches-11 arbor size match standard large-body angle grinders common in professional trade environments. Typical users include ironworkers, welders, pipefitters, and maintenance mechanics who require consistent material removal on ferrous and non-ferrous metals. The 80 grit rating positions this disc for medium-to-aggressive work where surface prep or weld cleanup is the primary task.

Key Features

• Type 29 conical profile increases surface contact for efficient flat grinding and blending
• Zirconia abrasive grain provides high cut rate with extended disc life on steel and stainless steel
• 80 grit for medium-to-aggressive stock removal and weld blending
• 7-inch diameter with 5/8 inches-11 threaded hub fits standard large angle grinders
• Weighs 0.81 pounds per disc for balanced performance on high-RPM tools

Compatibility

Designed as an OEM-style replacement or direct-use abrasive for large angle grinders accepting a 7-inch disc with a 5/8 inches-11 threaded arbor.

Installation Notes

Installation and disc changes should be performed by a qualified operator following ANSI B7.1 and tool manufacturer guidelines. Always power down and unplug or lock out the grinder before mounting or removing a disc. Inspect the disc for cracks or damage before each use and never exceed the maximum RPM rating printed on the disc. Eye protection, face shield, and appropriate PPE are required during operation.

Technical Specifications

• Disc Diameter: 7 inches
• Arbor Size: 5/8 inches-11 threaded
• Disc Type: Type 29 (Conical)
• Abrasive Material: Zirconia
• Grit: 80
• Weight: 0.81 pounds
• Sold As: Each

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: DW8330