3M 7100383699 6 Inch 600 Grit Ceramic Abrasive Disc

Product Description

The 3M 7100383699 is a 6-inch ceramic abrasive finishing disc from the Cubitron II 775L series, designed for cool-cutting, high-precision surface finishing work. It uses precision-shaped ceramic grain applied in an open-coat pattern to a high-strength polyester film backing rated at C weight. The ceramic grain self-sharpens during use, which accelerates material removal and reduces heat buildup at the surface. This makes the disc well-suited for finishing heat-sensitive metals and other materials where thermal damage is a concern. The film backing is exceptionally flat, supporting consistent, repeatable finishes in precision applications. The disc is rated for use wet or dry.

This disc is intended for finishing operations across a range of surfaces including paint, plastic, composites, gelcoat, fiberglass, and carbon steel. The open-coat construction leaves approximately 50 percent of the surface free of abrasive grain, which prevents swarf from loading the disc and extends working life. It is appropriate for automotive body work, marine finishing, aerospace composite prep, and general metal fabrication where a fine, controlled finish is required at 600 grit. Installation and use are handled by auto body technicians, composites finishers, and metalworkers operating orbital, random-orbital, or disc sanders.

Key Features

• Ceramic abrasive self-sharpens during use for faster cut rates and longer disc life
• Open-coat pattern covers approximately 50 percent of surface area to resist swarf loading and reduce heat
• High-strength polyester film backing provides a flat, stable substrate for high-precision finishing
• 600 grit rating delivers fine surface finishing suitable for final prep and finishing passes
• Rated for wet or dry use, compatible with water-based finishing workflows
• Suitable for paint, plastic, composites, gelcoat, fiberglass, and carbon steel

Compatibility

Compatible surfaces and substrates include paint, plastic, composites, gelcoat, fiberglass, and carbon steel. Designed for use on orbital and random-orbital sanders accepting 6-inch hook-and-loop or appropriate backup pads.

Installation Notes

Disc mounting and replacement is performed by the operator prior to each use or when the abrasive surface shows signs of loading or wear. Ensure the backing pad is clean and in good condition before attaching the disc to prevent uneven contact. When used wet, confirm that the sander and any connected equipment are rated for wet operation before proceeding. Disconnect power to the tool before changing discs.

Technical Specifications

• Disc Diameter: 6 inches
• Grit: 600
• Abrasive Type: Ceramic (Cubitron II Precision-Shaped Grain)
• Backing Material: Polyester Film
• Backing Weight: C Weight
• Coat Type: Open Coat
• Series: 775L
• Use: Wet or Dry

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100383699