3M 7010329840 Unitized Mounted Point A21 8A Medium

Product Description

The 3M 7010329840 is a Scotch-Brite EXL Unitized Mounted Point designed for delicate deburring and surface finishing on metal and plastic parts. Built to standard ANSI shapes, this mounted point uses a unitized abrasive construction that integrates the abrasive material throughout the wheel body rather than coating only the surface. This design delivers consistent cut and finish as the wheel wears, making it a reliable choice for controlled material removal and surface conditioning work. The A21 shape with a 1/4-inch shank fits standard die grinders and rotary tools used in fabrication and finishing operations. Grade is 8A Medium, suited for moderate stock removal with a refined surface result.

This mounted point is intended for use in light deburring, edge blending, and surface conditioning applications on metal components and plastic parts. It is well suited for production finishing environments where a consistent scratch pattern and part geometry must be maintained. Typical users include machinists, fabricators, and metal finishing technicians working with precision or delicate workpieces where aggressive abrasives would cause damage or dimensional loss.

Key Features

• Unitized abrasive construction provides consistent performance throughout the life of the wheel
• A21 ANSI standard shape with 1/4-inch shank for compatibility with common rotary and die grinder tooling
• 8A Medium grade balances surface conditioning with controlled material removal
• Effective on both metal and plastic substrates without aggressive surface damage
• Scotch-Brite EXL surface conditioning technology designed for delicate deburring and finishing

Compatibility

Designed for use with standard die grinders and rotary tools accepting a 1/4-inch shank mounted point. Suited for metal and plastic surface conditioning applications conforming to standard ANSI shape specifications.

Installation Notes

Installation is performed by a machinist or finishing technician using a die grinder or rotary tool with a 1/4-inch collet. Ensure the tool is powered off and unplugged before mounting or removing the point. Confirm the tool RPM rating meets or exceeds the mounted point maximum rated speed before operation. Inspect the wheel for damage before each use and discard if cracking or deformation is present.