Metabo 629474000 Flap Disc 40 Grit 6 Inch Type 27

Product Description

The METABO 629474000 is a Type 27 zirconia alumina flap disc designed for aggressive material removal on ferrous and non-ferrous metals. Part of the Flapper Plus series, it features a fiberglass backing plate that provides rigidity and support under load. The 40-grit coarse abrasive delivers fast stock removal on welds, rough edges, and surface scale. Rated at 10,200 RPM, this disc mounts via a threaded 5/8-11 arbor hole and is sized at 6 inches in diameter. Metal fabricators, pipefitters, and maintenance welders rely on this disc for grinding and blending tasks where consistent cut rate and disc longevity matter.

This flap disc is suited for grinding and blending operations on steel and stainless steel in both shop and field environments. The Type 27 flat profile works well on flat stock, weld beads, and structural shapes where the disc needs to sit flush against the workpiece surface. It fits standard 5/8-11 threaded angle grinders commonly used in fabrication and ironwork trades. The coarse 40-grit rating makes it most appropriate for initial weld cleanup, heavy deburring, and rapid surface conditioning rather than finishing passes.

Key Features

• Type 27 flat disc profile for flush grinding on flat and contoured surfaces
• 40-grit zirconia alumina abrasive for coarse, fast stock removal
• Fiberglass backing plate provides rigidity and backing support under load
• 10,200 RPM maximum speed rating for use with standard angle grinders
• 5/8-11 threaded arbor hole fits common angle grinder spindles
• Rated for use on steel and stainless steel

Compatibility

Designed for use with angle grinders equipped with a 5/8-11 threaded spindle. Rated for grinding and blending applications on steels and stainless steel.

Installation Notes

Installation and disc changes must be performed with the grinder powered off and unplugged or battery removed. Verify the grinder spindle speed rating meets or exceeds the 10,200 RPM maximum disc speed before mounting. Inspect the disc for damage before each use and discard any disc with visible cracks, missing flaps, or backing damage. Use the appropriate guard per ANSI B11 and tool manufacturer requirements for Type 27 discs.