3M 7100104972 Flap Disc 5 Inch 40 Grit Right Angle

Product Description

The 3M 7100104972 is a Type 29 right-angle flap disc engineered for medium to high-pressure grinding and finishing on metal surfaces. Built on a durable polyester backing, the disc uses 3M Precision-Shaped Grain abrasive technology to deliver a fast, consistent cut throughout the life of the disc. At 5 inches in diameter and 40 grit, it is suited for aggressive material removal tasks including beveling, weld removal, and edge deburring. As individual flaps wear down, fresh mineral is continuously exposed, maintaining cut rate and reducing the need for disc changes during a job.

This flap disc is used in fabrication shops, structural steel work, and general metalworking environments where both material removal speed and surface finish quality matter. It operates on standard right-angle grinders and is appropriate for use on carbon steel, stainless steel, and other common metal substrates. Licensed metalworkers, welders, and fabricators typically reach for this disc when fiber discs or bonded wheels carry too high a risk of gouging or surface damage. Its design makes it practical for both flat surface grinding and contoured edge work.

Key Features

• 3M Precision-Shaped Grain abrasive provides an exceptionally fast cut rate for high-productivity applications
• Durable polyester backing withstands high unit pressure without delaminating or flexing excessively
• Individual flap construction continuously exposes fresh mineral, sustaining consistent cut rate over the life of the disc
• Lower risk of gouging compared to fiber discs and bonded wheels, making it suitable where finish quality is critical
• Effective for beveling, weld removal, and edge deburring on a variety of metal substrates
• Type 29 right-angle geometry fits standard 5-inch right-angle grinders

Compatibility

Designed for use with standard right-angle grinders accepting 5-inch Type 29 flap discs. Suitable for use on carbon steel, stainless steel, and other common metal substrates in fabrication and welding applications.

Installation Notes

Mounting and disc changes should be performed by qualified personnel with the grinder unplugged or powered off and the battery removed if cordless. Verify the grinder spindle speed does not exceed the maximum rated RPM marked on the disc before use. Inspect the disc for damage before each use and replace immediately if cracking, tearing, or unusual wear is observed. Always use appropriate eye, face, and hand protection when operating angle grinders per applicable ANSI and OSHA standards.

Technical Specifications

• Disc Diameter: 5 inches
• Grit: 40
• Disc Type: Type 29 Right Angle Flap Disc
• Abrasive Grain: 3M Precision-Shaped Grain
• Backing Material: Polyester
• Weight: 4.8 pounds
• Package Length: 8.88 inches
• Package Width: 5.75 inches
• Package Height: 6.13 inches
• UPC: 076308643688

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104972