Product Details
The 3M™ Flap Disc 577F Giant measures 7 inches in diameter with a 5/8-11 thread size and features a Type 27 alumina zirconia abrasive with 36 grit. It is designed for tough grinding applications where a final finish is important, utilizing overlapping layers of abrasive-coated, fiber-reinforced flaps that wear away to expose fresh abrasive mineral for a fast, consistent cut and a blended finish. The flap disc includes a grinding aid to reduce temperatures when grinding heat-sensitive alloys such as stainless steel, nickel alloys, and titanium. These three-dimensional discs are used on right angle grinders and have wider flaps than standard discs, packing 25% more abrasive material for a more aggressive cut and longer life. Flap discs serve as a one-step alternative to bonded wheels and fiber discs, grinding and finishing in a single step while producing finishes typically one grade finer than comparable fiber discs. The flexible flaps follow curves and contours with less gouging, enhancing operator comfort. Suitable applications include blending, deburring, edge beveling, finishing, polishing, weld grinding, rust removal, and weld seam blending in metal fabrication. The product is certified for quality and safety, with dimensions and specifications optimized for industrial use, and is backed by appropriate warranty terms.








