3M 7100104889 Cubitron Ii 969F Flap Disc 5 in 80 Grit

Product Description

The 3M 7100104889 is a Type 29 right-angle flap disc built around 3M Precision-Shaped Grain on a durable polyester backing. At 5 inches in diameter and 80 grit, this disc is engineered for medium- to high-pressure metal grinding operations including beveling, weld removal, and edge deburring. As the abrasive flaps wear, they break down progressively to expose fresh mineral, maintaining a consistent cut rate from the first pass to the last. Licensed trade professionals and fabricators rely on this disc where both material removal speed and surface finish quality matter.

This flap disc is suited for aggressive grinding on a variety of metals in fabrication shops, structural steel work, and field welding environments. The right-angle geometry makes it compatible with standard angle grinders. Its design reduces the risk of gouging compared to fiber discs and bonded abrasive wheels, making it practical for applications where a controlled finish is required alongside fast stock removal. Each disc is sold individually and is appropriate for both production and repair work on ferrous and non-ferrous metals.

Key Features

• 3M Precision-Shaped Grain delivers a fast, consistent cut rate throughout disc life
• Polyester backing withstands high unit pressure without delaminating
• Progressive flap breakdown continuously exposes fresh abrasive mineral
• Lower gouging risk compared to fiber discs and bonded abrasive wheels
• Suitable for applications requiring both material removal and controlled surface finish
• Right-angle design compatible with standard 5-inch angle grinders

Compatibility

Designed for use with standard 5-inch right-angle grinders in fabrication, welding, and metal finishing applications across ferrous and non-ferrous materials.

Installation Notes

Flap discs must be mounted and operated by personnel familiar with angle grinder safety requirements. Always confirm the grinder spindle speed does not exceed the maximum RPM rating marked on the disc before mounting. Power down and disconnect the grinder from its power source before changing discs. Inspect the disc for damage before each use and discard any disc that shows cracks, missing flaps, or visible backing separation.

Technical Specifications

• Diameter: 5 inches
• Grit: 80
• Disc Type: Right Angle (Type 29)
• Abrasive Mineral: 3M Precision-Shaped Grain
• Backing Material: Polyester
• Package Weight: 4.42 pounds
• Package Length: 8.88 inches
• Package Width: 5.75 inches
• Package Height: 6.13 inches
• UPC: 076308643725

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104889