CGW 42371 4-1/2" X 5/8"-11 Type 29 36-Grit XL Z3 Zirconia Flap Disc

The CGW 42371 is a 4-1/2 inch diameter, 5/8-11 arbor Type 29 zirconia flap disc designed for aggressive material removal on steel. Built with premium zirconia alumina grain on a durable poly/cotton backing, it combines efficient stock removal with a finished surface suitable for metalworking and fabrication tasks. The zirconia concentration enhances cut-rate while the poly/cotton backing provides a balance of rigidity and a smoother finish, supporting continued use on demanding grinding operations.

This flap disc features an XL rectangular flap arrangement and a Z3 grain strategy, optimized for heavy-duty applications where high stock removal is required. An active grinding aid is included to facilitate cooler cutting under light pressure, which can help reduce heat buildup during extended grinding sessions. The result is a versatile option for aggressive grinding, capable of maintaining performance across multiple workpieces and sessions when used with compatible grinders operating at the specified RPM.

In terms of compatibility, the product uses a 4-1/2" diameter with a 5/8"-11 threaded arbor, aligning with common angle grinder configurations. The package configuration is typically sold as individual discs or in boxes of ten, depending on the supplier. When choosing this flap disc, verify the grinder’s RPM rating and ensure operation within the 13,300 RPM range stated for this part to maintain safe, effective grinding performance. Proper mounting and use with appropriate PPE remain essential for safe operation in metalworking environments.

Features:

• Premium Zirconia Alumina grain on poly/cotton backing for durability and finish
• High stock removal with aggressive cutting action
• Active grinding aid for cool cutting under light pressure
• Fast stock removal in the marketplace for steel applications
• Designed for aggressive use and heavy-duty applications
• Type 29 profile with 4-1/2 in diameter and 5/8-11 in arbor