CGW 42351 4-1/2" X 5/8"-11 Type 27 36-Grit XL Z3 Zirconia Flap Disc

The CGW 42351 flap disc is a 4-1/2 inch diameter, 5/8-11 hub style Type 27 grinding disc designed for aggressive metal finishing on steel. It uses a premium zirconia alumina grain on a durable poly/cotton backing, which supports both effective stock removal and a smoother finish. The zirconia composition and high grain concentration are intended to promote faster material removal while maintaining a cooler cut, aided by the disc’s active grinding aid and the light pressure recommended during use.

This disc is configured for heavy-duty, high-demand applications where fast material removal is prioritized. The Type 27 center allows angled grinding and contouring on flat or curved surfaces, making it suitable for weld blending, deburring, and edge chamfering tasks commonly encountered in fabrication and maintenance environments. The abrasive stack-up is designed to withstand continued use under demanding conditions, with a focus on maintaining cutting efficiency over a practical service life.

For use, select a compatible 4-1/2 inch flap disc with a 5/8-11 arbor to ensure proper mounting and balance on standard right-angle grinders. The product is packaged as individual discs or in a box quantity of 10, which supports stocking for repeated maintenance or workshop reuse. When selecting this disc, consider the material hardness, expected stock removal rate, and the need for consistent cooling to minimize heat buildup during extended grinding sessions.

Features:

• Premium Zirconia Alumina grain on poly/cotton backing for durability and finish
• High stock removal due to zirconia concentration
• Fastest stock removal in the marketplace for steel applications
• Recommended for aggressive use and heavy-duty applications
• Active grinding aid for cool cutting with light pressure
• 4-1/2" diameter, 5/8-11" arbor, Type 27
• XL design for extended life