3M 7100145363 Sanding Disc 320 Grit 5 Inch

Product Description

The 3M 7100145363 is a 5-inch hook-and-loop coated abrasive sanding disc designed for stock removal on a wide range of substrates. Built on a film backing, this disc uses 3M Precision Shaped Ceramic Grain — a triangular mineral engineered to slice through material rather than gouge or plow like conventional abrasives. The result is a disc rated to cut up to 2x faster and last up to 6x longer than standard abrasive discs. At 320 grit, it is suited for fine stock removal and surface prep work. Each disc is sold individually.

This disc is intended for use in finishing and surface preparation applications where fast cut rate and extended disc life reduce downtime and consumable cost. The 320 grit rating makes it appropriate for finish sanding on wood, composites, painted surfaces, and similar substrates. The precise multi-hole pattern supports dust extraction systems, keeping the work surface clear and improving finish quality. It is commonly used by finish carpenters, auto body technicians, and general contractors working with orbital and random-orbit sanders equipped with hook-and-loop pads.

Key Features

• 3M Precision Shaped Ceramic Grain slices substrate rather than gouging, delivering up to 2x faster cut than conventional abrasives
• Extended disc life rated up to 6x longer than conventional abrasive discs
• Film backing provides greater tear resistance and edge retention compared to paper-backed discs
• Hook-and-loop attachment system allows fast, tool-free disc changes
• Precise multi-hole pattern designed for superior dust extraction compatibility
• 320 grit rating suited for fine stock removal and surface prep across a wide variety of substrates

Compatibility

Designed for use with 5-inch hook-and-loop random-orbit and orbital sanders equipped with compatible dust extraction pads.

Installation Notes

Align the disc holes with the sander pad holes before pressing the hook-and-loop surfaces together to ensure proper dust extraction. Confirm the sander pad is free of debris before attaching a new disc to maintain a secure bond. Do not exceed the tool RPM rating printed on the disc or tool housing. Worn or glazed discs should be replaced promptly to avoid heat buildup and surface damage.

Technical Specifications

• Diameter: 5 inches
• Grit: 320
• Attachment Type: Hook and Loop
• Backing Material: Film
• Abrasive Type: Precision Shaped Ceramic Grain
• Weight: 0.0152 pounds
• UPC: 00076308470814

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100145363