Norton 662544-00253 Flap Disc Type 27 4-1/2x7/8 40 Grit

Product Description

The NORTON 662544-00253 is a Quick Trim SG Blaze flat flap disc engineered for aggressive material removal on metal and fabrication surfaces. Built to the Type 27 flat profile, it measures 4-1/2 x 7/8 inches and uses a 40-grit ceramic aluminum oxide abrasive. Ceramic aluminum oxide delivers a cooler, faster cut than conventional abrasive grains and self-sharpens under pressure, maintaining consistent stock removal throughout the disc life. This disc is sized for standard 4-1/2-inch angle grinders and is sold individually, with a minimum order quantity of 10 units per order.

This flap disc is suited for heavy grinding, weld blending, and surface prep work on steel, stainless steel, and other hard metals. The Type 27 flat face geometry keeps the abrasive surface flush against the workpiece, making it well matched to flat stock, weld seams, and structural fabrication applications. It is a common choice for metal fabricators, ironworkers, pipefitters, and industrial maintenance technicians working with angle grinders in shop or field environments.

Key Features

• Type 27 flat profile for flush surface contact on flat stock and weld seams
• 40-grit ceramic aluminum oxide abrasive for aggressive stock removal
• Self-sharpening grain maintains cut rate as the disc wears
• 4-1/2 x 7/8-inch size fits standard angle grinders
• Quick Trim SG Blaze R980P series construction
• Replaces discontinued part number 66261100002

Compatibility

Designed as a direct replacement for discontinued item 66261100002. Fits standard 4-1/2-inch angle grinders with a 7/8-inch arbor.

Installation Notes

Installation and use should be performed by qualified grinding and fabrication personnel following ANSI B7.1 and applicable workplace safety standards. Inspect the disc for damage before mounting and confirm the grinder RPM rating meets or exceeds the disc maximum RPM before operation. Always use the appropriate guard and personal protective equipment including face shield, gloves, and hearing protection. Never use a damaged or delaminated disc.

Technical Specifications

• Series: R980P
• Type: 27 (Flat)
• Size: 4-1/2 x 7/8 inches
• Grit: 40
• Abrasive Material: Ceramic Aluminum Oxide
• Weight: 0.3 pounds
• Minimum Order Quantity: 10
• Unit of Measure: Each

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 662544-00253