Norton 77696090171 Flap Disc 40 Grit Type 27 3 Inch

Product Description

The NORTON 77696090171 is a Type 27 coated flap disc designed for aggressive material removal on metal surfaces. Built with zirconia alumina abrasive at 40 grit, this coarse-grade disc delivers fast stock removal and extended disc life compared to standard aluminum oxide options. The fiberglass backing provides rigidity and support during heavy grinding applications. Rated at 30,000 RPM maximum, it accepts a Quick-Change Type R attachment for rapid disc swaps without additional hardware. Fabricators, welders, and metal finishers rely on this disc for weld blending, edge grinding, and surface conditioning.

This flap disc is suited for use on mild steel, stainless steel, and other ferrous metals in fabrication shops, maintenance facilities, and field welding environments. The Type 27 flat profile makes it well-suited for flat surface work and shallow angle grinding where consistent contact across the disc face is required. The Quick-Change Type R mount is compatible with right-angle grinders equipped with a matching mandrel, allowing fast changeovers on the job.

Key Features

• 40 grit zirconia alumina abrasive for coarse, high-rate material removal
• Type 27 flat profile for flat surface and low-angle grinding
• Quick-Change Type R attachment for tool-free disc changes
• Fiberglass backing for rigidity and structural support under load
• 30,000 RPM maximum speed rating
• 3 inch diameter suits compact right-angle grinders

Compatibility

Designed for use with right-angle grinders equipped with a Quick-Change Type R mandrel. Intended for coarse grinding and weld blending applications on metal surfaces.

Installation Notes

Installation and disc changes should be performed by qualified personnel following the grinder and disc manufacturer guidelines. Always power down and disconnect the grinder before mounting or removing the disc. Confirm the grinder RPM rating meets or exceeds the disc maximum RPM of 30,000 before operation. Inspect the disc for damage before each use and never operate a cracked or delaminated flap disc.