Flap Discs

Versatile, easy-to-use abrasive discs with cutting-edge 3M technologies.


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Flap Discs from 3M: The versatile option.

  • Flap discs are one of the most common abrasives used in metal fabrication shops around the world. Shop owners and operators rely on them for their versatility, long life and ease of use. Since they are more conformable than other abrasive discs and wheels, operators of every skill level are less likely to damage parts by gouging the metal. While fibre discs grind faster and grinding wheels last longer, they don’t offer the application versatility of flap discs, which leave a finer finish after the grinding step.

    3M flap discs are the product of decades of technological innovation and application expertise. We offer both type 27 (flat) and type 29 (conical) flap discs in a range of sizes and attachment systems to fit your angle grinder. Request a sample today and see the benefits of versatile, easy-to-use flap discs powered by 3M Precision-Shaped Grain.

  • Constructed for long life and conformability.

    Flap discs are constructed of overlapping abrasive-coated flaps attached to a central hub. As the disc is used, the flaps continually wear away to expose a new layer of abrasive mineral. This allows for a consistent cut-rate and finish throughout the entire life of the disc.

    Plus, the gaps between the coated abrasive flaps make them much more conformable than other grinding discs and wheels — making them great for grinding and blending on curves and contours.

Find the right flap disc for you.

Each job has its own unique challenges. That’s why 3M offers a selection of flap discs engineered to perform in a range of applications. Check out our Premium and Advanced Series flap discs designed for medium and heavy-duty metal fabrication tasks.

Solution Spotlight | Weld Removal with 3M™ Cubitron™ II Flap Disc

before image of beveling after image of beveling

Grind and blend your welds in a single step.
Use the before-and-after slider to see how a 3M™ Cubitron™ II Flap Disc removes a ¾” submerged arc weld. Since flap discs leave behind a finer finish than fibre discs and depressed center grinding wheels, they can allow you to skip the blending step before adding a final finish.

Watch our versatile flap discs in action.

  • Beveling with 3M Abrasives

    See how 3M™ Cubitron™ II Flap Discs compare to fibre discs and depressed center grinding wheels in a beveling application.

  • Weld Grinding Carbon Steel

    Flap discs are great for grinding welds. See how they stack up against other angle grinding products.

  • Blending and Finishing Metal

    Watch how 3M™ Cubitron™ II Flap Discs make easy work of metal surface preparation and blending.

Connect with us.


We are interested in helping you decide which Industrial Abrasives product works best for your application. A 3M Abrasive Expert will contact you to ensure you're getting the product you need to get your job done right.

If you would like to speak to us about product and technical support questions, please call 136 136.