Norton 77696097541 Flap Disc 4-1/2 in Type 27 Aluminum Oxide

Product Description

The NORTON 77696097541 is a Type 27 non-woven flap disc designed for surface blending, finishing, and light material removal on metal and other hard substrates. Built with aluminum oxide abrasive flaps bonded to a fiberglass backing plate, this disc delivers consistent cut and finish performance across its full service life. It carries a fine grade rating and is rated to 13,300 RPM, making it compatible with standard 4-1/2 inch angle grinders. The flat-profile Type 27 geometry suits flush grinding and surface work where a low angle of attack is required. Installers and fabricators in metal finishing, welding cleanup, and surface prep applications rely on this disc for controlled material removal without aggressive stock loss.

This disc is suited for use on angle grinders in light industrial, fabrication, and field service environments. The non-woven aluminum oxide construction makes it well matched to surface conditioning tasks such as weld blending, deburring, and pre-paint prep on ferrous and non-ferrous metals. The 7/8 inch arbor hole fits the standard spindle size found on most 4-1/2 inch angle grinders. Typical users include welders, metal fabricators, pipefitters, and maintenance technicians working on structural steel, sheet metal, and tubing.

Key Features

• Type 27 flat-profile design for flush surface grinding and blending
• Aluminum oxide non-woven abrasive construction for consistent finish performance
• Fine grade rating suited to surface conditioning and pre-finish prep work
• Fiberglass backing plate provides rigid support and disc stability at speed
• 13,300 RPM maximum speed rating compatible with standard 4-1/2 inch angle grinders
• 7/8 inch arbor hole fits most common grinder spindle configurations

Compatibility

Designed as an OEM-style replacement flap disc for use with 4-1/2 inch angle grinders equipped with a standard 7/8 inch arbor spindle.

Installation Notes

Installation and disc changes should be performed by qualified tradespeople with the grinder fully powered down and unplugged or lock-out/tag-out procedures completed before handling. Inspect the disc for damage before mounting and confirm the grinder spindle speed does not exceed the 13,300 RPM rating marked on the disc. Secure the arbor nut to the spindle according to the grinder manufacturer specifications using the appropriate spanner wrench. Always use the appropriate guard and personal protective equipment including eye and face protection when operating angle grinders with abrasive discs.