Norton 66254430118 Razorstar 5 Inch 36 Grit Fiber Disc

Product Description

The NORTON 66254430118 is a 5-inch RazorStar fiber disc designed for aggressive material removal in grinding and blending applications. It features a ceramic alumina abrasive coating bonded to a fabric backing, delivering a coarse 36-grit cut that bites hard into steel, stainless, and weld seams. The threaded arbor hole accepts a standard 5/8-11 arbor, eliminating the need for a backup pad nut in compatible angle grinder setups. Rated to 12,000 RPM, this disc is built for sustained use by metalworkers, fabricators, and trade professionals who demand consistent stock removal over extended runs.

This disc is suited for use in metal fabrication shops, structural steel work, and weld preparation or cleanup tasks. Its coarse 36-grit ceramic alumina construction makes it appropriate for initial surface conditioning, heavy deburring, and removing mill scale or rust. The 5-inch diameter fits standard angle grinders used in both shop and field environments. It is sold individually but requires a minimum order of 25 units, making it a practical choice for stocking a shop or outfitting a crew.

Key Features

• Ceramic alumina abrasive delivers fast, aggressive stock removal on ferrous and non-ferrous metals
• 36 grit coarse grade for heavy grinding, weld seam removal, and surface prep
• Threaded 5/8-11 arbor hole for direct mounting on compatible angle grinders without a separate nut
• Fabric backing provides flexibility and durability under load
• 12,000 RPM maximum speed rating for use with standard angle grinders
• RazorStar series construction for consistent cut rate throughout disc life

Compatibility

Designed for use with angle grinders equipped with a 5/8-11 threaded spindle and compatible with standard 5-inch fiber disc applications in metal grinding and surface preparation.

Installation Notes

Installation and disc changes must be performed by qualified personnel with the grinder fully powered off and unplugged or battery removed. Inspect the disc for cracks or damage before each use and never operate above the rated 12,000 RPM. Ensure the grinder spindle thread is clean and that the disc seats flush before applying load. Eye protection, gloves, and a face shield are standard PPE for grinding operations.