3M 7100138175 Scotch-brite Bristle Disc 4.5 in 120 Grit

Product Description

The 3M 7100138175 Scotch-Brite Bristle Disc is a 4.5-inch diameter abrasive disc designed for surface preparation and finishing tasks across metal and coated surfaces. Built with molded, abrasive-filled flexible bristles and a ceramic abrasive grain, this disc removes paint, rust, weld burns, heavy oxides, adhesives, and other surface contaminants efficiently. The bristle construction provides more surface contact than conventional wire brushes and maintains consistent cutting performance throughout the life of the disc. At 120 grit, it delivers controlled material removal suitable for blending, deburring, and coating removal. Installers and fabricators in welding, industrial maintenance, and metal finishing applications are the primary users of this disc.

This bristle disc is suited for surface prep work on large flat areas as well as contoured or complex parts, where flexible bristles conform to irregular geometry. It is used in metal fabrication shops, industrial maintenance environments, and construction settings for removing coatings, stains, and oxidation prior to painting or welding. The disc mounts to standard angle grinders and rotary tools that accept 4.5-inch accessories. No wire filaments are present, which reduces the risk of wire fragment ejection during operation.

Key Features

• Ceramic abrasive grain delivers aggressive cutting and consistent finish quality throughout disc life
• Molded abrasive-filled bristles strip, deburr, blend, finish, polish, clean, and remove coatings with less pressure than wire brushes
• Flexible bristles conform to contoured and complex part geometries
• Bristle spacing optimized for coating removal and high-loading applications
• Contains no wire filaments, reducing the risk of wire fragment ejection
• 4.5-inch diameter covers large surface areas efficiently

Compatibility

Designed for use with standard angle grinders and rotary power tools that accept 4.5-inch diameter disc accessories.

Installation Notes

This disc is installed and used by metal fabricators, maintenance technicians, and industrial tradespeople. Always power down and disconnect the tool before mounting or removing the disc. Confirm the tool RPM rating meets or exceeds the disc RPM rating before use. Wear appropriate PPE including eye protection and gloves during operation.

Technical Specifications

• Diameter: 4.5 inches
• Grit: 120
• Abrasive Material: Ceramic
• Color: White
• Package Dimensions: 9.7 x 6.4 x 5.2 inches
• Weight: 0.34 pounds
• Minimum Order Quantity: 10
• UPC: 00048011242439

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138175