3M 7100138179 Scotch-brite Bristle Disc 3 Inch 120 Grit

Product Description

The 3M 7100138179 is a Scotch-Brite Radial Bristle Disc engineered for surface preparation tasks including coating removal, deburring, blending, and rust or oxide removal. The disc uses ceramic abrasive grain molded directly into flexible bristles, which means the abrasive is continuously exposed as the bristles wear. At 3 inches in diameter and 120 grit, this disc suits detail work and moderate material removal on metal and painted surfaces. It is installed on a right-angle grinder or die grinder and used by metal fabricators, industrial maintenance technicians, and trade professionals who need consistent surface finishing without wire contamination.

This disc is suited for both shop and field use where surface prep is required before welding, painting, or coating application. The curved bristle profile allows the disc to conform to contoured and complex part geometries, making it effective on tubing, pipe joints, weld seams, and irregular surfaces. It removes paint, adhesives, weld burns, rust, heavy oxides, and general surface contaminants without leaving embedded wire fragments. The minimum order quantity is 4 units per box.

Key Features

• Ceramic abrasive grain molded into bristles delivers aggressive cutting that remains consistent throughout disc life
• Flexible curved bristles conform to contours and complex part profiles without added pressure
• No wire filaments in construction, eliminating risk of wire fragment embedment in workpiece surfaces
• Bristle spacing optimized for high-loading applications such as coating and adhesive removal
• Removes paint, rust, heavy oxides, weld burns, adhesives, and surface contaminants

Compatibility

Designed for use on right-angle grinders and die grinders configured for radial bristle disc accessories. Suitable for surface preparation on metal, painted steel, and welded assemblies in fabrication, maintenance, and industrial finishing applications.

Installation Notes

A licensed or qualified technician should confirm the grinder RPM rating meets or exceeds the disc maximum speed before mounting. Power down and disconnect the tool from its power source before changing discs. Wear appropriate eye protection and a face shield during operation, as bristle discs generate debris. Follow grinder manufacturer guidelines and applicable OSHA standards for abrasive wheel use.

Technical Specifications

• Diameter: 3 inches
• Grit: 120
• Abrasive Material: Ceramic
• Bristle Profile: Curved
• Package Weight: 1.15 pounds
• Package Length: 6.9 inches
• Package Width: 3.6 inches
• Package Height: 4.2 inches
• Unit of Measure: Box
• Minimum Order Quantity: 4
• UPC: 051131075448

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138179