CGW 42310 4-1/2" X 5/8"-11 Type 27 24-Grit Z3 Zirconia Flap Disc

The CGW 42310 4-1/2" x 5/8"-11 Type 27 24-Grit Z3 Zirconia Flap Disc is designed for aggressive material removal on steel surfaces while delivering a relatively smooth finish. The disc features premium zirconia alumina grain on a durable poly/cotton backing, a combination chosen to balance stock removal with surface results. Zirconia concentration is focused to promote efficient cutting, which can help reduce grind time on heavy-duty tasks.

Key construction details include a Type 27 configuration, which provides an angled face intended for edge contact and smoother grinding on flat and contoured surfaces. The 24-grit zirconia grain is optimized for rapid material removal, and the active grinding aid embedded in the resin bond supports cooler cutting under light pressure. This helps manage heat generation during extended use, potentially extending disc life and reducing substrate discoloration when grinding steel.

Practical use considerations include selecting this flap disc for aggressive stock removal where a balance between speed and finish is acceptable. The 4-1/2" diameter with a 5/8"-11 arbor size makes it compatible with common right-angle grinders used in metal fabrication, maintenance, and repair tasks. Each packaging unit contains ten discs, which supports frequent replacement in busy shop environments without frequent reordering. For best results, use at appropriate wheel speeds and maintain steady, light pressure to leverage the active cooling benefits and prolong disc performance.

Features:

• Premium Zirconia Alumina grain on poly/cotton backing
• High stock removal for steel applications
• Type 27, 24 grit for aggressive grinding
• Active grinding aid for cool cutting with light pressure
• 4-1/2" diameter with 5/8"-11 arbor
• Durable construction designed for heavy-duty use