Dewalt DW8312 Type 29 Zirconia Flap Disc 4.5 in 60 Grit

Product Description

The DEWALT DW8312 is a Type 29 zirconia alumina flap disc designed for aggressive stock removal and blending on metal surfaces. Measuring 4.5 inches in diameter with a 5/8 inches-11 threaded hub, this disc fits standard angle grinders used daily in fabrication, welding, and metal finishing work. The 60-grit zirconia abrasive delivers a fast cut rate with good disc life, making it a practical choice for heavy grinding passes on steel and other ferrous materials. The conical T29 profile keeps the abrasive cloth at an angle to the workpiece, improving contact on flat surfaces and weld seams.

This flap disc is suited for metal fabrication shops, structural steel work, shipbuilding, and general weld blending applications. It performs on mild steel, stainless steel, and similar ferrous metals where consistent material removal and surface conditioning are required. Sold individually, it is a standard consumable for angle grinder operators who need a reliable 60-grit disc for medium-to-heavy grinding tasks.

Key Features

• Type 29 conical profile for improved contact on flat and curved surfaces
• 60-grit zirconia alumina abrasive for fast, aggressive stock removal
• 4.5-inch diameter fits standard angle grinders with 5/8 inches-11 arbor
• Zirconia grain self-sharpens during use for extended disc life compared to aluminum oxide
• Threaded 5/8 inches-11 hub for direct mount without a separate backing nut on compatible grinders

Compatibility

Designed for use with angle grinders equipped with a 5/8 inches-11 threaded spindle, which is the standard arbor size for 4.5-inch angle grinders across most major tool brands.

Installation Notes

Flap discs are installed and serviced by metalworkers, fabricators, and maintenance trades. Always power down and unplug or lock out the angle grinder before mounting or removing a disc. Inspect the disc for damage before each use and never exceed the maximum RPM rating marked on the disc. Wear appropriate PPE including a face shield, gloves, and hearing protection during operation.

Technical Specifications

• Disc Diameter: 4.5 inches
• Arbor Size: 5/8 inches-11
• Grit: 60
• Abrasive Material: Zirconia Alumina
• Disc Type: Type 29 (T29)
• Weight: 0.38 pounds
• UPC: 028877310480

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: DW8312