3M Flap Disc 577F, T27 Giant, Alumina Zirconia, Dry/Wet, 4-1/2" Diameter, 80 Grit, 5/8"-11 Thread Size (Pack of 1)

Product Description 3M Flap Disc 577F tackles the toughest high-pressure metalworking applications and leaves a blended finish, all in a single step. Our abrasive flap disc features fast-cutting alumina zirconia mineral on durable polyester-backed flaps for extra cutting power, and long life on heavy duty applications such as weld removal, sharp-edge work, and beveling. From the Manufacturer The 3M™ Flap Disc 577F Type 27 giant quick change disc tackles your toughest high-pressure metalworking applications and leaves a blended finish, all in a single step. The 577F abrasive flap disc features fast-cutting alumina zirconia mineral on durable polyester-backed flaps for extra cutting power, and long life on heavy duty applications such as weld removal, sharp-edge work, and beveling. A grinding aid reduces grinding temperatures for processes involving heat-sensitive alloys such as stainless steel, nickel alloys, and titanium. Ideal for tough grinding applications where final finish is important, the overlapping layers of the flaps continually wear away with use to expose fresh mineral for a fast, consistent cut, while the cushioning of the flaps creates a blended finish. Flap discs typically generate a finish one grade finer than the disc is graded, reducing finishing steps. Type 27 is designed for high pressure applications on flat surfaces or outside edges and produces a smooth finish. Each quick change disc comes packaged with a disposable attachment hub and has a 5/8 inch threaded center hole for attachment to a right angle grinder. Giant 4-1/2 inch flap discs have a max RPM of 13,300, and the 7 inch discs have a max RPM of 8,600. Flap discs are three-dimensional grinding discs with overlapping layers of abrasive-coated, fiber-reinforced flaps that fan out from a central hub. These flaps continually wear away with use to expose fresh mineral for a fast, consistent cut. The one-step alternative to bonded wheels and fiber discs, flap discs grind and finish in a single step, making them a time and cost-saving solution in many typical applications. Under normal conditions, flap discs will generate a finish that is one grade finer than the finish of a fibre disc of the same grade. And, because their overlapping construction allows more abrasive material to be loaded onto the cutting surface, they far outlast typical discs. Flap discs have the flexibility to easily follow curves and contours while delivering less gouging and enhancing operator comfort. They are ideal for a wide range of applications, including weld grinding, deburring, rust removal, edge grinding, and weld seam blending. For more than a century, 3M has applied innovation and technology to improving our customers’ lives and supporting their business goals. Today the company, from its headquarters in St. Paul, Minnesota, serves industrial and commercial customers and consumers in nearly 200 countries. Abrasive Systems products, including a complete line of coated abrasives, microfinishing and microreplicated abrasives, and hardware accessories, provide the finishing touch for almost any surface conditioning application. The 3M brand, across thousands of products, represents consistency, superior quality, and value.

• Alumina zirconia mineral with a grinding aid provides more cutting power than aluminum oxide across all metal types
• Flaps combine grinding and blending into one step for time savings
• Heavyweight polyester-backed flaps provide longer life on high-pressure applications such as sharp-edge work and beveling
• Quick change disc simplifies disc changes