3M 7100099301 Fibre Disc 782C 36 Grit 9-1/8 in Carbon Steel

Product Description

The 3M 7100099301 is a coated fibre disc built for aggressive material removal on carbon steel. Designated as the 782C, it uses 3M Precision Shaped Grain, an advanced abrasive mineral engineered to cut faster and outlast conventional fibre discs. The disc measures 9 1/8 inches in diameter and mounts via a 7/8 inch arbor. At 36 grit, it is suited for heavy stock removal. A stiff fibre backing combined with a strong resin bond gives the disc the rigidity and tear resistance needed for sustained use under high load. Licensed tradespeople and fabrication professionals are the primary installers and operators of this product.

This disc is designed for demanding metalworking tasks including weld removal, bevel grinding, edge chamfering, blending, and finish refinement on carbon steel workpieces. The 36 grit rating makes it most effective in initial material removal stages where cut rate is the priority. It is appropriate for use in both production fabrication and field repair settings where consistent, rapid cut is required. The disc is compatible with 3M disc pad face plates and hubs, which are sold separately.

Key Features

• 3M Precision Shaped Grain delivers higher cut rates than conventional abrasive minerals
• 36 grit configuration suited for aggressive weld removal, beveling, and edge chamfering
• Stiff fibre backing and strong resin bond provide durability and tear resistance under heavy load
• 9 1/8 inch diameter with 7/8 inch arbor mount for standard angle grinder compatibility
• Long-lasting abrasive mineral reduces disc changeover frequency
• Compatible with 3M disc pad face plates and hubs (sold separately)

Compatibility

Compatible with 3M disc pad face plates and hubs sold separately. Designed for use on carbon steel in heavy-duty grinding and finishing applications.

Installation Notes

This disc should be installed and operated by qualified metalworking or fabrication professionals familiar with angle grinder safety procedures. Inspect the disc for damage before each use and ensure the grinder guard is in place before powering the tool. Always match the disc RPM rating to the grinder RPM rating before operation. Wear appropriate PPE including face shield, gloves, and hearing protection during use.

Technical Specifications

• Disc Diameter: 9 1/8 inches
• Arbor Size: 7/8 inch
• Grit: 36
• Abrasive Type: 3M Precision Shaped Grain
• Backing: Fibre
• Disc Type: Coated
• Weight: 19.51 pounds
• Unit of Measure: Each
• UPC: 076308895926

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099301