Dewalt DWA8206H Type 29 Flap Disc 4.5 in 40 Grit

Product Description

The DEWALT DWA8206H is a Type 29 zirconia alumina flap disc designed for aggressive material removal on metal surfaces. The depressed center profile presents the abrasive at an angle, increasing contact area and cutting efficiency compared to flat Type 27 discs. At 40 grit, this disc falls in the coarse grade range, making it well suited for weld blending, heavy stock removal, and surface prep on steel and stainless steel. It is rated to a maximum of 13,300 RPM and measures 4.5 inches in diameter with a 5/8-11 arbor hole. Licensed tradespeople and fabrication shops are the primary users.

This flap disc fits 4.5-inch angle grinders with a 5/8-11 spindle thread, which is the standard configuration on most professional-grade grinders. It is used in structural steel fabrication, welding shops, metal service centers, and maintenance facilities where weld spatter removal, rust elimination, and surface conditioning are routine tasks. The coarse 40-grit cut rate reduces the number of passes needed on heavy material, making it a practical choice for high-volume grinding work.

Key Features

• Type 29 depressed center profile increases contact angle for aggressive stock removal
• Zirconia alumina abrasive delivers a faster cut rate and longer disc life compared to standard aluminum oxide
• 40-grit coarse grade suited for weld blending, deburring, and heavy surface prep
• 13,300 maximum RPM rating compatible with standard 4.5-inch angle grinders
• 5/8-11 center hole fits the most common professional grinder spindle thread
• Black and yellow disc construction for visual wear identification

Compatibility

Designed for use with 4.5-inch angle grinders equipped with a 5/8-11 spindle thread. Fits the standard arbor configuration found on most professional-grade corded and cordless angle grinders in this disc diameter class.

Installation Notes

Installation and operation should be performed by qualified users familiar with angle grinder safety practices. Always disconnect power or remove the battery before mounting or removing a flap disc. Confirm the grinder spindle speed does not exceed the 13,300 RPM maximum disc rating before use. Wear appropriate PPE including a face shield, gloves, and hearing protection; follow applicable ANSI B7.1 safety standards for abrasive wheel use.