3M 7100077622 Sanding Disc 6 Inch P320 Grit

Product Description

The 3M 7100077622 is a coated abrasive sanding disc engineered for random orbital sanders in professional finishing and surface preparation applications. This 6-inch disc uses aluminum oxide abrasive grain at P320 grit and attaches via a hook-and-loop (Hookit) fastening system rated to 12,000 RPM. A precision multi-hole pattern across the disc face evacuates sanding dust more efficiently than standard 5- or 6-hole designs, keeping the cut surface cleaner and extending disc life. An open-coat, load-resistant mineral coating resists clogging during use. Licensed finishing technicians, body shop professionals, and skilled tradespeople working wood, composites, or painted surfaces will find this disc suited for fine finish passes.

This disc is designed for use on random orbital disc sanders in light industrial, automotive refinishing, woodworking, and general surface preparation settings. The 6-inch diameter and P320 grit make it appropriate for final sanding stages before sealing, priming, or coating. The multi-hole pattern does not require alignment with the backing pad holes, which speeds up disc changes during high-volume finishing work. Each disc ships individually as a single unit.

Key Features

• Precision multi-hole dust evacuation pattern requires no alignment with pad holes for fast disc changes
• Open-coat, load-resistant aluminum oxide abrasive resists clogging and maintains cut rate
• Hook-and-loop (Hookit) attachment allows quick removal and reattachment during use
• Durable film backing is tear-resistant and supports a consistent, close-tolerance finish
• Aluminum oxide grain cuts faster and outlasts traditional garnet abrasives
• Rated to 12,000 RPM for compatibility with standard random orbital finishing tools

Compatibility

Designed as a hook-and-loop replacement disc for 6-inch random orbital sanders equipped with multi-hole or universal dust extraction backing pads.

Installation Notes

Installation is performed by pressing the hook-and-loop face of the disc firmly onto a compatible 6-inch sanding pad. Confirm the sander RPM rating does not exceed 12,000 RPM before use. Inspect the backing pad for worn hooks before attaching a new disc, as degraded pads reduce holding strength and can cause disc separation during operation. Remove all power from the tool before mounting or removing any abrasive disc.

Technical Specifications

• Disc Diameter: 6 inches
• Grit: P320
• Abrasive Mineral: Aluminum Oxide
• Attachment Type: Hook and Loop (Hookit)
• Maximum Speed: 12,000 RPM
• Backing Type: Film
• Coating: Open Coat, Load-Resistant
• Weight: 0.02 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100077622