Dewalt DWA8356HTR Flap Disc 40 Grit Type 27 4.5 Inch Zirconia

Product Description

The DEWALT DWA8356HTR is a Type 27 flap disc designed for aggressive material removal on steel and stainless steel surfaces. It uses a zirconia alumina abrasive at 40 grit coarse grade, which delivers fast cutting action and extended disc life compared to standard aluminum oxide. The disc measures 4.63 inches in diameter with a 5/8-11 threaded arbor hole for direct mounting to most angle grinders. Rated to 13,300 RPM, it is built for sustained use with handheld grinders in fabrication, welding prep, and weld blending applications. The trimmable design allows the operator to expose fresh abrasive as the flaps wear down.

This flap disc is suited for professional metalworkers, welders, pipefitters, and fabricators who need consistent stock removal on mild steel, structural steel, and stainless steel. The Type 27 flat profile makes it effective for flat surface grinding and blending. Its coarse 40-grit cut rate is appropriate for removing mill scale, weld spatter, and surface rust, as well as initial weld seam blending before finish grinding. The 5/8-11 threaded arbor attaches directly without a backing nut, reducing setup time in the field.

Key Features

• Zirconia alumina abrasive for fast cut rate and extended service life on steel and stainless steel
• 40 grit coarse grade suited for aggressive stock removal, mill scale removal, and weld prep
• Type 27 flat profile optimized for flat surface grinding and blending
• 5/8-11 threaded arbor hole mounts directly to standard angle grinders without a backing nut
• Trimmable construction allows fresh abrasive exposure as flaps wear
• 13,300 RPM maximum speed rating compatible with standard 4.5-inch angle grinders

Compatibility

Designed for use on steel and stainless steel with standard 4.5-inch angle grinders equipped with a 5/8-11 spindle thread. Verify that the grinder free speed does not exceed 13,300 RPM before use.

Installation Notes

Installation requires a compatible 4.5-inch angle grinder with a 5/8-11 threaded spindle. Power down and disconnect the grinder from its power source before mounting or removing the disc. Thread the disc onto the spindle by hand and confirm it is fully seated before operation. Always inspect the disc for damage prior to each use and never operate above the rated maximum RPM.