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3M™ Flap Disc 577F, T29 Giant 4-1/2 in x 5/8-11 40 YF-weight, 10 per case

3M ID  60440263584    UPC#  00051141310008     
3M(TM) Flap Disc 577F
3M(TM) Flap Disc 577F
3M(TM) Flap Disc Type 29 Illustration Line Art
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.
  • 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
  • Durable YF-weight polyester-backed flaps provide longer life on high-pressure applications such as sharp-edge work and beveling
  • Quick change disc simplifies disc changes
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Ideal for tough grinding applications where final finish is important, the overlapping layers of the flaps on 3M™ Flap Disc 577F continually wear away with use to expose fresh abrasive 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. A grinding aid reduces grinding temperatures for processes involving heat-sensitive alloys such as stainless steel, nickel alloys, and titanium.

Flap discs are used on a right angle grinder. Giant size flap discs have the same diameter as standard flap discs but wider flaps. The wider flaps create extra-thick layers and are packed with 25% more abrasive material than on standard flap discs, for more aggressive cut and longer life.

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.


Application CategoryBlending/Deburring, Finishing/Polishing, Grinding/Metal Stock Removal
ApplicationsBlending, Deburring, Edge Beveling, Finishing, Polishing, Right Angle Grinding
Attachment TypeThreaded
Backing MaterialPolyester Cloth
Backing WeightYF Weight
Coat TypeClosed Coat
Converted FormFlap Disc
Diameter4.5 Inch
Diameter (Metric)114.3 mm
Equipment - MachinesRight Angle Grinders
Form TypeType 29
Max RPM13300
Max Speed80 mps
Mineral TypeAlumina Zirconia
Primary ApplicationMetalworking
Product FormDisc
Sub IndustriesMetal Fabrication
Thread Size5/8-11 INT