3M 7100138180 Scotch-brite Bristle Disc 7 Inch 50 Grit

Product Description

The 3M 7100138180 is a 7-inch diameter Scotch-Brite Bristle Disc designed for aggressive surface preparation on large workpieces. Built with ceramic abrasive grain molded directly into flexible bristles, it removes paint, rust, weld burns, heavy oxides, adhesives, and other surface contaminants faster and more safely than wire brushes. At 50 grit, it delivers fast stock removal while the flexible bristle construction allows the disc to conform to contours and complex profiles without gouging the base material. Weighing 0.6 pounds, it is sized for angle grinders and similar rotary tools used by metal fabricators, pipefitters, welders, and maintenance trades.

This disc is suited for coating removal, deburring, blending, and surface cleaning on metal substrates in both shop and field environments. The straight configuration makes it compatible with standard right-angle grinders. Its 7-inch diameter covers large surface areas efficiently, making it practical for structural steel prep, pipe weld cleanup, and heavy industrial maintenance work where wire brushes would require more passes and greater operator pressure.

Key Features

• Ceramic abrasive grain molded into flexible bristles for aggressive cutting throughout the full disc life
• Flexible bristles conform to contours and complex part geometries, reducing operator pressure requirements
• Removes paint, rust, weld burns, adhesives, heavy oxides, and surface contaminants from large areas
• No wire filaments, eliminating the risk of wire breakage and embedded wire hazards
• Bristle spacing optimized for high-loading applications such as coating removal
• Straight disc configuration for use on standard right-angle grinders

Compatibility

Designed for use on angle grinders accepting 7-inch straight bristle discs; suitable for metal surface preparation including structural steel, pipe, and fabricated components.

Installation Notes

Installation and operation should be performed by qualified trades familiar with rotary abrasive tools. Ensure the grinder is rated for the disc diameter and operating speed before mounting. Always power down and disconnect the tool before changing discs. Operators should wear appropriate PPE including eye protection and face shield, as bristle discs generate debris at high velocity.

Technical Specifications

• Diameter: 7 inches
• Grit: 50
• Abrasive Material: Ceramic
• Disc Style: Straight
• Package Dimensions: 7.7 x 5.3 x 7.6 inches
• Weight: 0.6 pounds
• UOM: Each
• Minimum Order Quantity: 5
• UPC: 00048011276854

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138180