3M 7000121159 Unitized Mounted Point 8A Medium

Product Description

The 3M 7000121159 is a Scotch-Brite EXL unitized mounted point designed for precision surface conditioning of metal and plastic parts. Built in an ANSI-standard B52 shape with a 1/8-inch shank, this mounted point delivers controlled deburring, blending, and light finishing without aggressive stock removal. The unitized construction integrates abrasive fibers throughout the entire body of the wheel, so performance remains consistent as the point wears down. The medium (8A) grade provides a balance between cut rate and surface finish quality, making it appropriate for applications where part geometry and surface integrity must be maintained.

This mounted point is suited for die grinder or rotary tool use in metal fabrication, aerospace component finishing, and light industrial deburring operations. It is commonly used by machinists, metalworkers, and maintenance technicians who need repeatable surface conditioning on contoured or hard-to-reach areas of metal and plastic workpieces. The B52 ANSI shape fits standard mounted-point collets and works well on internal surfaces, slots, and recessed features.

Key Features

• Scotch-Brite EXL unitized construction delivers consistent cut and finish throughout the life of the point
• B52 ANSI standard shape fits common die grinder and rotary tool collets
• 1/8-inch shank for compatibility with standard mounted-point holders
• Medium (8A) grade balances surface conditioning rate with workpiece integrity
• Suitable for deburring and finishing on both metal and plastic substrates

Compatibility

Designed for use with die grinders and rotary tools accepting a 1/8-inch shank mounted point in ANSI B52 configuration. Suitable for conditioning metal and plastic parts where standard mounted-point collets are used.

Installation Notes

Mounted points must be installed in a collet sized to match the 1/8-inch shank diameter and tightened securely before operation. Verify the tool RPM rating meets or exceeds the rated speed of the abrasive before use, and always follow ANSI B7.1 safety standards for abrasive product handling. Inspect the point for damage or irregularities before each use and do not use on a cracked or deformed wheel. Wear appropriate eye and face protection during operation.

Technical Specifications

• ANSI Shape: B52
• Shank Diameter: 1/8 inch
• Grade: Medium (8A)
• Technology: Scotch-Brite EXL Unitized Surface Conditioning
• Weight: 0.12 pounds
• UPC: 00048011648019
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000121159