CGW 39475 4-1/2" X 5/8"-11 Type 29 80-Grit XL A3 Aluminum Oxide Flap Disc

CGW 39475 is a 4-1/2 inch diameter, 5/8-11 arbor Type 29 flap disc designed for versatile metalworking and related materials. This Disc features premium aluminum oxide grain bonded to a polyester backing, providing a robust sanding surface suitable for surface preparation and finishing tasks on ferrous and nonferrous metals, as well as plastics and wood. The Type 29 profile offers an angled grinding surface that helps blend edges, deburr, and shape contours while maintaining control on angled workpieces. The XL construction supports prolonged use by distributing material removal over a broader area, which can improve consistency and reduce heat buildup during grinding. These attributes make it a practical choice for deburring, blend polishing, and material removal where a combination of aggressiveness and finish is needed.

Technical details matter because the grain and backing influence cut rate, heat generation, and durability under load. Aluminum oxide on a polyester backing provides a balance of hardness and flexibility, enabling effective material removal on a variety of substrates without clogging quickly. The disc is rated for up to 13300 RPM, aligning with typical power tool capabilities for this size and avoiding overhung load failures. For best results, use a compatible 4-1/2" angle grinder and ensure proper clamping to prevent vibration during heavy material removal.

The product is sold individually with a box quantity of 10 discs, which supports batch replacements and consistent inventory management in shop environments. Compatibility notes: 4-1/2" diameter with a 5/8-11 threaded arbor is standard for many compact grinders, but users should verify their tool’s arbor fit and maximum RPM before operation. The combination of 80-grit aluminum oxide and Type 29 geometry is well-suited for initial shaping and deburring tasks, as well as light finishing when paired with suitable technique and pressure.

Features:

• Premium Aluminum Oxide grain on a polyester backing
• Type 29 flap disc for angled finishing
• Diameter 4-1/2 inch; Arbor 5/8-11
• Grit 80 for efficient material removal
• XL A3 design suitable for ferrous/non-ferrous metals, plastics, and wood
• Max RPM 13300 for high-performance grinding
• Pack includes 10 discs per box