3M 7100138342 Scotch-brite Bristle Disc 3/4 in 120 Grit

Product Description

The 3M 7100138342 Scotch-Brite Radial Bristle Disc is a 3/4-inch diameter, 120-grit ceramic abrasive disc designed for surface preparation, coating removal, and finishing on metal and other substrates. Molded, abrasive-filled bristles replace wire brushes in applications requiring deburring, blending, rust removal, and contaminant stripping. The ceramic abrasive grain delivers aggressive cutting action while maintaining consistent finish quality across the full service life of the disc. Flexible bristles conform to contours and complex geometries with less applied pressure than conventional wire brush tooling. This disc is suited for use by fabricators, welders, and maintenance technicians working on production and field applications.

This disc is used in metal fabrication, weld preparation, and industrial maintenance scenarios where surface cleanliness and consistent finish quality are required. Typical applications include removing paint, adhesives, weld burns, rust, heavy oxides, and surface contaminants from large areas. The curved bristle profile and flexible design make it practical for both flat surfaces and irregular or contoured parts. It is well suited for trade professionals in fabrication shops, structural steel work, and industrial maintenance environments.

Key Features

• 120-grit ceramic abrasive grain for aggressive cutting and consistent finish throughout disc life
• Flexible, molded bristles conform to contours and complex part geometries
• Removes paint, rust, weld burns, adhesives, heavy oxides, and surface contaminants
• Requires less applied pressure than wire brushes, reducing operator fatigue
• Contains no wire filaments, eliminating wire-breakage safety hazard
• Bristle spacing optimized for high-loading coating removal applications

Compatibility

Designed for use as a radial bristle disc on compatible rotary tools, die grinders, and angle grinders that accept 3/4-inch diameter disc accessories.

Installation Notes

Installation and operation should be performed by a qualified technician familiar with abrasive tooling and rotary power tools. Verify that the tool spindle speed does not exceed the rated RPM for this disc before mounting. Wear appropriate PPE including eye protection and gloves during use. Ensure the workpiece is secured and the power tool is properly guarded before operation.

Technical Specifications

• Diameter: 3/4 inch
• Grit: 120
• Abrasive Material: Ceramic
• Bristle Profile: Curved
• Package Dimensions: 8.3 x 5.3 x 5.6 inches
• Weight: 0.01 pounds
• UPC: 00048011337166

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138342