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The 3M 7100138302 is a Scotch-Brite Bristle Brush Replacement Disc in T-C configuration, rated at 220 grit for light to medium surface conditioning work. Each disc measures 6 inches in diameter and is sold as a refill pack of 40 discs, with 2 packs included per case. These discs are designed to replace worn bristle brush assemblies, restoring the tool to full cutting and finishing performance without replacing the entire hub assembly. Installers and fabricators working in HVAC, plumbing, and mechanical trades rely on this grit level for deburring, cleaning, and blending metal surfaces prior to fitting or welding operations.
These replacement discs are suited for surface preparation tasks in both shop and field environments. Common applications include cleaning pipe ends, removing mill scale and light oxidation, and blending weld zones on ferrous and non-ferrous metals. The 220 grit level produces a fine, consistent surface finish appropriate for pre-coating prep or precision fitting work. Mechanical contractors, pipe fitters, and sheet metal technicians are the primary users in trade settings.
Designed as a refill replacement for compatible 6-inch T-C configuration Scotch-Brite bristle brush hub assemblies. No specific model numbers were provided in the product data; confirm hub compatibility with the existing tool before ordering.
Replacement discs should be installed by following the tool manufacturer's disc-change procedure with the power tool fully de-energized and unplugged before servicing. Inspect the hub assembly for wear or damage before mounting a new disc. Operate within the maximum RPM rating marked on the hub and wear appropriate PPE including eye protection and gloves. Refer to ANSI B7.1 or the tool manufacturer's safety data for abrasive disc handling requirements.
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