Home » Product » 4-1/2 x 7/8 Type 29 Flap Disc Zirconia for Metal 40 Grit, 10/bx

4-1/2 x 7/8 Type 29 Flap Disc Zirconia for Metal 40 Grit, 10/bx


BoltCraft’s 4-1/2″ x 7/8″ Type 29 Flap Disc, featuring Zirconia abrasive for metal with a 40 grit, is designed for aggressive material removal and surface preparation in metalworking applications. This high-performance flap disc combines the fast cutting action of a grinding wheel with the fine finish of a sanding disc, offering durability and efficiency for grinding, deburring, and shaping metal surfaces, packaged in a box of 10 for extensive professional use.

SKU: 11FD4540-T29-B

$50 minimum order


  • The Type 29 Flap Disc by BoltCraft with zirconia alumina abrasive is optimized for robust stock removal on various metals, including stainless steel, aluminum, and ferrous metals. The 40 grit provides an aggressive cut for effective shaping, grinding, and surface preparation, ensuring a high-quality foundation for subsequent finishing processes.

Applications & Advantages

  • Ideal for heavy grinding, edge chamfering, and weld blending in fabrication shops, auto body repair, and construction projects, enhancing productivity and work quality.
  • Zirconia alumina grain maintains high cutting performance and disc life over standard aluminum oxide, making it a cost-effective choice for high-demand environments.
  • The conical shape (Type 29) of the disc allows for greater surface contact on contours and edges, maximizing efficiency and control in grinding tasks.

Material & Specifications

  • Constructed with durable zirconia alumina abrasive on sturdy polyester flaps, the disc wears evenly to continually expose fresh, sharp grains for consistent grinding action.
  • The 4-1/2″ diameter and 7/8″ arbor size are compatible with most angle grinders, facilitating ease of use across a range of metalworking tasks.
  • The 40 grit is engineered for rapid material removal, offering an effective solution for the initial stages of surface preparation and shaping.

Reliability & Performance

  • Designed to provide a cooler grinding experience, reducing the risk of overheating and material distortion, preserving the workpiece’s integrity.
  • The flap disc’s durability and consistent performance under pressure ensure reliable results in both industrial and craft-based applications.

Testing & Compliance

  • Subjected to comprehensive testing for balance, safety, and performance to meet BoltCraft’s stringent quality standards for abrasive products.
  • Adheres to industry safety standards for flap discs, ensuring safe operation when used with proper personal protective equipment and techniques.
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