3M 7000028342 Hook and Loop Disc 5 Inch P320 Grit

Product Description

The 3M 7000028342 is a coated abrasive hook-and-loop disc designed for finishing work on a random orbital sander. Built on a light A-weight paper backing with aluminum oxide mineral, this 5-inch disc runs at up to 12,000 RPM and delivers fast, consistent cuts across a wide range of surface materials. Open-coat construction and a load-resistant coating work together to minimize disc loading, extend service life, and keep cut rate steady throughout use. It is intended for professional finishing applications where surface quality and disc longevity matter.

This disc is suited for finishing applications on wood, primer, paint, sealers, topcoats, fiberglass, and plastics. It attaches and releases quickly via the hook-and-loop (Hookit) interface, making disc changes fast during production or detail work. At P320 grit, it is appropriate for fine finish sanding passes prior to topcoat or final inspection. Automotive body technicians, woodworking professionals, and composite fabricators are the primary users of this disc.

Key Features

• P320 grit aluminum oxide mineral for fine finishing cuts on multiple substrate types
• Open-coat construction reduces loading on resins, sealers, and soft materials
• Load-resistant coating prolongs disc life and maintains cut consistency
• Light A-weight paper backing provides flexibility for finish sanding contours
• Hook-and-loop attachment allows fast disc changes and disc reuse
• 5-inch diameter rated to 12,000 RPM for use with standard random orbital sanders

Compatibility

Designed for use with 5-inch hook-and-loop random orbital sanders in finishing applications on wood, primer, paint, sealers, topcoats, fiberglass, and plastics.

Installation Notes

Align the disc squarely on the sander pad before engaging to prevent uneven wear or detachment during operation. Verify that the sander is rated for 5-inch hook-and-loop discs and does not exceed the 12,000 RPM maximum disc speed rating. Inspect the disc for tears or loading before each use and replace if the abrasive surface is glazed or clogged. Wear appropriate respiratory protection and eye protection when sanding in enclosed spaces or on painted surfaces.