Norton 66623399000 Flap Disc 4-1/2" x 5/8"-11 R766 40 Grit Blending

The Norton R766 flap disc is a high-performance abrasive disc designed for aggressive stock removal and blending applications on metal surfaces. This 4-1/2 inch diameter disc features a threaded 5/8"-11 arbor for quick, tool-free mounting on angle grinders.

Key Features:

• 40 grit aluminum oxide abrasive for fast material removal and heavy grinding
• R766 blending formula provides consistent finish and extended disc life
• Type 27 flat design ideal for flat surface grinding and blending
• Heat-treated cloth backing resists tearing and provides flexibility
• Maximum operating speed of 13,300 RPM for professional-grade performance
• Threaded 5/8"-11 hub attachment for secure, vibration-free operation

This flap disc is ideal for weld blending, deburring, rust removal, and surface preparation on steel, stainless steel, and other ferrous metals. The overlapping abrasive flaps provide a smooth, consistent finish while the cloth backing ensures durability during demanding metalworking applications.