3M 7100199658 Hookita 321U Disc 6 Inch 500 Grit

Product Description

The 3M 7100199658 is a Hookita 321U abrasive disc designed for paint preparation and body repair work in automotive finishing environments. The disc blends aluminum oxide mineral with ceramic grain to sustain cut rate across a range of sanding stages. At 6 inches in diameter and 500 grit, it is suited for fine material removal and surface refinement before topcoat application. An anti-loading coating keeps the cutting surface clear of dust and debris, extending usable disc life. The multi-hole pattern aligns with most standard backup pads and supports dust extraction at the source.

This disc is used in automotive collision repair and paint prep workflows where consistent finish quality and efficient material removal are required. The 500 grit rating positions it for finish sanding passes rather than aggressive stock removal. The Hookita attachment system allows fast disc swaps without tools, reducing downtime during high-volume production refinishing work. It is typically installed by auto body technicians and professional refinishers working with random orbital or disc sanders.

Key Features

• Ceramic and aluminum oxide mineral blend for sustained cut rate across sanding stages
• 500 grit rating suited for finish sanding and pre-topcoat surface prep
• Anti-loading coating reduces clogging and extends disc life
• Multi-hole pattern supports dust extraction and aligns with most backup pads
• Hookita attachment allows fast, tool-free disc changes
• Upgraded resin construction improves disc durability and finish consistency

Compatibility

Designed for use with Hookita-compatible backup pads and random orbital sanders used in automotive paint preparation and body repair applications.

Installation Notes

Installation is performed by auto body technicians using compatible orbital or disc sanding equipment. Confirm the backup pad is rated for the disc diameter before mounting. Inspect the Hookita attachment surface on both the disc and pad for debris or wear before each use. Follow shop safety procedures including dust extraction and respiratory protection when sanding painted or primed surfaces.

Technical Specifications

• Diameter: 6 inches
• Grit: 500
• Abrasive Type: Ceramic Aluminum Oxide
• Hole Pattern: Multi-hole
• Attachment Type: Hookita
• Package Weight: 4.67 pounds
• Package Length: 13.8 inches
• Package Width: 6.9 inches
• Package Height: 7.3 inches
• UPC: 051131362494

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100199658