3M 7100138318 Finishing Flap Brush 6x1x2 Inch Very Fine

Product Description

The 3M 7100138318 is a finishing flap brush designed for light-duty cleaning and finishing work on metal, wood, and composite surfaces. Individual abrasive sheets are adhered at a 90-degree angle to a central core, creating a flap-style action that conforms minimally to the workpiece for consistent surface contact. The abrasive mineral is very fine grade aluminum oxide, suited to final-stage finishing and light surface prep. The hard 7 density construction extends service life while keeping conformability low, making this brush a dependable choice for technicians and fabricators who need repeatable, controlled results.

This flap brush is used in light finishing and cleaning applications across metal fabrication, maintenance, and surface preparation work. At 6 inches in diameter by 1 inch wide with a 2-inch arbor hole, it mounts to standard bench grinders and pedestal-mounted wheel heads. It is well suited to deburring, blending light scratches, and removing light oxidation or surface contamination before coating or inspection. Typical users include maintenance technicians, welders, and fabrication shop personnel working on ferrous and non-ferrous substrates.

Key Features

• Very fine grade aluminum oxide abrasive mineral for controlled, light-duty finishing
• Individual sheets adhered at 90 degrees to the core for consistent flap-style cutting action
• Hard 7 density for extended service life and low surface conformability
• 6 inches x 1 inch x 2 inches sizing fits standard bench grinder arbors
• Rated for cleaning and finishing applications on a range of substrate materials

Compatibility

Designed as a drop-in replacement-style finishing flap brush for standard bench grinders and pedestal wheel heads accepting a 2-inch arbor bore.

Installation Notes

Installation should be performed by qualified personnel following the wheel and accessory mounting procedures outlined in ANSI B7.1. Power down and lock out the grinder before mounting or removing the brush. Verify that the machine speed rating does not exceed the maximum RPM rated for the brush. Inspect the brush for damage before each use and never operate a damaged or out-of-balance flap brush.

Technical Specifications

• Diameter: 6 inches
• Width: 1 inch
• Arbor Hole: 2 inches
• Abrasive Mineral: Aluminum oxide
• Grade: Very fine
• Density: 7 (Hard)
• Weight: 0.4 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 3
• UPC: 00048011012049

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138318