Norton 666233-57280 Resin Fiber Disc 80 Grit 5x7/8 Inches

Product Description

The NORTON 666233-57280 is an aluminum oxide resin fiber disc engineered for heavy stock removal on metal surfaces. Built on an FX370 fiber backing, it delivers aggressive cutting action at an 80 grit rating, making it well suited for grinding welds, removing rust, and shaping ferrous and non-ferrous metals. The disc measures 5 inches in diameter with a 7/8-inch arbor hole and is sold by the box with a minimum order quantity of one box. Weighing 1.2 pounds per box, it is a practical choice for high-volume grinding applications where cost efficiency and consistent material removal are priorities.

This disc is used across metal fabrication shops, structural steel work, and general industrial maintenance environments. It is appropriate for use with standard angle grinders equipped with a 5-inch backing pad. The 80 grit designation makes it most effective for initial surface preparation, aggressive deburring, and blending operations before finishing steps are applied. Both professional tradespeople and maintenance crews working with carbon steel, stainless steel, and aluminum will find this disc applicable to their workflow.

Key Features

• Aluminum oxide abrasive grain for aggressive and consistent stock removal
• FX370 fiber backing provides durability and flexibility under load
• 80 grit rating suited for heavy grinding, weld blending, and surface prep
• 5-inch diameter with 7/8-inch arbor hole fits standard angle grinder backing pads
• Economically priced for high-volume or production grinding use

Compatibility

Designed as an OEM-style replacement or standard-fit disc for 5-inch angle grinders and die grinders equipped with a compatible 7/8-inch arbor backing pad.

Installation Notes

Installation and disc changes should be performed by qualified personnel following all applicable ANSI B7.1 and tool manufacturer safety guidelines. Always power down and disconnect the angle grinder from its power source before mounting or removing the disc. Inspect the disc for cracks or damage before each use and never exceed the maximum RPM rating marked on the disc or tool. Wear appropriate PPE including eye protection and gloves during grinding operations.

Technical Specifications

• Abrasive Material: Aluminum Oxide
• Backing Type: FX370 Fiber
• Grit: 80
• Disc Diameter: 5 inches
• Arbor Size: 7/8 inches
• Weight: 1.2 pounds
• Unit of Measure: Box
• Minimum Order Quantity: 1

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 666233-57280