3M 7100104899 Cubitron Ii 969F Flap Disc 4.5 in 40 Grit T29

Product Description

The 3M 7100104899 is a Cubitron II 969F flap disc engineered for aggressive material removal on metal surfaces. Built with 3M Precision-Shaped Grain bonded to a durable polyester backing, this Type 29 disc delivers a consistently fast cut rate throughout its service life. Individual flaps wear progressively, continuously exposing fresh abrasive mineral so cut performance does not degrade as the disc wears down. At 4.5 inches in diameter and 40 grit, it is sized for right-angle grinders and suited to high unit-pressure work where speed and a cleaner finish both matter.

This disc is designed for medium to high-pressure grinding applications including beveling, weld removal, and edge deburring on a variety of metals. The Type 29 conical flap geometry increases surface contact on curved and flat workpieces, making it a practical choice for fabrication shops, structural steel work, pipeline fitting, and general metal fabrication. Licensed trade professionals and skilled fabricators working with angle grinders will find this disc a direct fit for production grinding tasks where finish quality is also a factor.

Key Features

• 3M Precision-Shaped Grain provides exceptionally fast, consistent cut rate for the life of the disc
• Progressive flap wear continuously exposes fresh abrasive mineral, maintaining cut performance
• Durable polyester backing stands up to high unit-pressure applications without delaminating
• Type 29 right-angle geometry improves surface contact on both flat and contoured workpieces
• Lower gouging risk compared to fiber discs and bonded grinding wheels
• Suitable for applications where surface finish quality is a priority alongside material removal rate

Compatibility

Designed for use with right-angle grinders accepting 4.5-inch Type 29 flap discs with a standard arbor fitment. Suitable for grinding and finishing on carbon steel, stainless steel, and other metals where 40-grit aggressive stock removal is required.

Installation Notes

Mount on a right-angle grinder rated for the disc diameter and maximum RPM before use. Ensure the grinder guard is in place and verify the spindle arbor is compatible before securing the disc. Wear appropriate PPE including face shield, gloves, and hearing protection during operation. Inspect the disc for damage before each use and discard any disc that shows signs of delamination or cracking.

Technical Specifications

• Disc Diameter: 4.5 inches
• Grit: 40
• Disc Type: Type 29 (T29)
• Grinder Compatibility: Right Angle
• Abrasive Material: 3M Precision-Shaped Grain
• Backing Material: Polyester
• Package Weight: 3 pounds
• Package Length: 8.88 inches
• Package Width: 5.75 inches
• Package Height: 6.13 inches
• UPC: 076308644180

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104899