Norton 636425-36148 Red Head Flap Disc Type 27 60 Grit

Product Description

The NORTON 636425-36148 is a Red Head flap disc built for aggressive material removal on angle grinders. This Type 27 flat-profile disc measures 4.5 inches in diameter with a 5/8-11 arbor thread and carries a 60-grit abrasive surface made from a ceramic alumina and zirconia alumina mineral blend. The dual-mineral construction delivers fast stock removal with extended disc life compared to standard aluminum oxide flap discs. It is suited for grinding, blending, and finishing on steel, stainless steel, and other hard metals. Fabricators, welders, and metal finishing tradespeople are the primary installers and users of this product.

This flap disc is designed for use on 4.5-inch angle grinders in fabrication shops, job sites, and maintenance applications where a Type 27 flat-face profile is specified. The 60-grit rating makes it most appropriate for initial weld seam grinding, heavy scale removal, and surface prep before finishing passes. It is sold in a package quantity of 5 discs per box, making it practical for shop stocking. The R61 and R822 series designations correspond to the abrasive backing construction used by NORTON in this product line.

Key Features

• Type 27 flat-profile design for flat and contoured surface grinding
• 60-grit ceramic alumina and zirconia alumina mineral blend for fast, aggressive stock removal
• 4.5-inch diameter with 5/8-11 threaded arbor for direct mounting on standard angle grinders
• R61 and R822 series construction for extended disc life under heavy use
• Sold in boxes of 5 discs for efficient shop and field restocking

Compatibility

Designed for use on 4.5-inch angle grinders with a 5/8-11 arbor. Compatible with grinders accepting Type 27 flap discs of this diameter and thread specification.

Installation Notes

Installation and disc changes must be performed with the grinder powered off and unplugged or battery removed. Inspect the disc for damage before mounting and confirm the grinder's rated RPM meets or exceeds the disc's maximum RPM rating. Follow ANSI B7.1 and tool manufacturer guidelines for mounting and guard use. Always wear appropriate eye, face, and hand protection during operation.

Technical Specifications

• Series: R61 and R822
• Disc Type: Type 27
• Diameter: 4.5 inches
• Arbor Size: 5/8-11
• Grit: 60
• Mineral: Ceramic Alumina and Zirconia Alumina
• Package Quantity: 5 per box
• Weight: 0.035 pounds

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 636425-36148