Abrasive Hook and Loop Disc 3M 178 mm SC-DH brown coarse

3M Abrasive Hook and Loop Disc 178 mm SC-DH (brown, coarse) is a replacement sanding disc made for 178 mm hook-and-loop backing pads. The coarse abrasive grain is formulated to provide aggressive material removal and fast stock removal on wood, metal and composite surfaces. The disc is easy to fit and remove, offering consistent sanding performance for workshop, bodyshop and industrial sanding operations.

Advantages

The hook-and-loop attachment allows quick disc changes without tools, reducing downtime. Coarse brown grit delivers high cutting efficiency for shaping and leveling tasks while maintaining disc life suited to heavy-duty use. Uniform abrasive distribution ensures consistent surface contact and predictable removal rates across the working area.

Suitable for

• Rapid stock removal on timber and structural wood
• Surface preparation and rust removal on metal
• Shaping and trimming composite panels and fiberglass
• Initial sanding before finer grits or primer application

Key specifications

• Disc diameter: 178 mm
• Abrasive type: coarse brown grit
• Attachment: hook-and-loop (hook-and-loop compatible backing)
• Designed use: aggressive material removal and shaping
• Typical substrates: wood, metal, composites

How to use

Fit the 178 mm hook-and-loop disc onto a matching 178 mm sanding backing pad, ensuring full contact between the disc and pad. Operate at the recommended speed for the backing pad and sanding tool, applying even pressure and using overlapping strokes to avoid gouging. Replace the disc when cutting performance decreases or the abrasive surface becomes clogged. For best results, follow the sanding sequence from coarse to finer grits as required for the job.

Usage recommendations

Use appropriate personal protective equipment including eye protection, respirator and hearing protection when sanding. Test on a small area to confirm suitability for the material and adjust pressure and speed to avoid overheating or excessive removal. Keep workpiece and tool secure to maintain consistent results.