Norton 78072743404 Ceramic Alumina Fiber Disc 5 in 36 Grit

Product Description

The NORTON 78072743404 is a ceramic alumina coated fiber disc rated at 36 grit for very coarse material removal. Measuring 5 inches in diameter with a 5/8-11 threaded arbor hole, this disc mounts directly to compatible threaded backup pads without a separate fastener. The resinoid bond holds the ceramic alumina abrasive grain firmly to the fiber backing, supporting aggressive stock removal on metal, weld seams, and surface prep applications. Rated to 12,000 RPM, it is suited for use with angle grinders and disc grinders. Fabricators, ironworkers, and metal finishing technicians are the primary users. The disc weighs 0.08 pounds and is part of the F980 Series, offered in a single-disc package.

This fiber disc is designed for heavy material removal on ferrous and non-ferrous metals in fabrication shops, structural steel work, and general metal grinding applications. The very coarse 36-grit ceramic alumina construction removes metal rapidly and is well suited to grinding down welds, deburring heavy stock, and surface conditioning where a rough cut is required. NORTON specifies use with the Norton Speed-Change Back-Up Pad to ensure proper support and even abrasive contact across the full disc face during operation.

Key Features

• Ceramic alumina abrasive grain for aggressive, fast cutting action on metal
• 36 grit, very coarse grade for high stock removal rates
• 5/8-11 threaded arbor hole for tool-free mounting via threaded backup pad
• Resinoid bond secures grain to fiber backing under high-load grinding
• 12,000 RPM maximum speed rating
• F980 Series orange disc, 5 inches diameter and 0.17 inches thick

Compatibility

Designed for use with the Norton Speed-Change Back-Up Pad. Fits angle grinders and disc grinders accepting a 5/8-11 threaded arbor interface.

Installation Notes

Installation and disc changes should be performed with the grinder disconnected from power. Thread the disc onto a compatible 5/8-11 Speed-Change Back-Up Pad until seated securely before operating. Always confirm the tool RPM rating meets or exceeds the disc maximum of 12,000 RPM before use. Inspect the disc for cracks or damage before each use and never operate a damaged disc.