Norton 66623399049 Fiber Disc 4 Inches

Product Description

The NORTON 66623399049 is a fiber disc designed for aggressive material removal and surface conditioning in metalworking and fabrication applications. Fiber discs mount to a right-angle grinder fitted with a compatible backing pad and deliver consistent cutting action on steel, aluminum, and other metals. The disc measures 4 inches in diameter and weighs approximately 1 pound per package. Installers and fabricators rely on fiber discs for weld blending, rust removal, deburring, and stock removal where a flap disc or grinding wheel would be impractical.

This disc is suited for light industrial and trade use across metal fabrication shops, HVAC duct work, plumbing rough-in, and general maintenance environments. It is handled by sheet metal workers, pipefitters, and maintenance technicians who need a consistent, fast-cutting abrasive in a compact 4-inch format. The single-disc package quantity allows for straightforward inventory and jobsite stocking with a minimum order of 10 units.

Key Features

• 4-inch diameter fits standard right-angle grinders with a compatible backing pad
• Fiber backing provides rigidity and durability under load
• Suited for weld blending, deburring, and surface stock removal on metal
• Packaged individually for simple single-disc stocking and reorder
• Minimum order quantity of 10 units supports job lot and shop inventory purchasing

Compatibility

Designed as an OEM-style replacement fiber disc for use with 4-inch right-angle grinders equipped with a rigid or semi-flexible fiber disc backing pad.

Installation Notes

Fiber discs are installed and replaced by qualified tradespeople using a properly rated right-angle grinder and a matched backing pad. Always disconnect or de-energize the grinder before changing discs. Inspect the backing pad for wear or damage before mounting a new disc, as a damaged pad can cause uneven wear or disc failure. Follow ANSI B11 and tool manufacturer guidelines for maximum RPM ratings and personal protective equipment requirements.