3M 7100104606 Flap Disc 4.5 Inch 60 Grit Type 29

Product Description

The 3M 7100104606 is a 4.5-inch Type 29 flap disc designed for medium to high-pressure metal grinding applications. Built with 3M Precision-Shaped Grain bonded to a durable polyester backing, this disc delivers a fast, consistent cut rate from first use through the life of the disc. At 60 grit, it sits in the medium-aggressive range, making it well suited for beveling, weld removal, and edge deburring on a variety of metals. The Type 29 angled configuration is optimized for right-angle grinder use and keeps the disc face engaged with the work surface for efficient stock removal. Weighing 0.45 pounds, it is a standard single-unit disc intended for professional shop and field use.

This flap disc is used in metal fabrication, structural steel work, pipe fitting, and welding shops where operators need to remove weld beads, bevel edges, or deburr cut surfaces efficiently. The 60-grit construction balances aggressive stock removal with a surface finish quality acceptable for downstream fit-up or coating preparation. It is compatible with right-angle grinders fitted with a 4.5-inch disc capacity and appropriate Type 29 backing flanges. The polyester backing resists flex fatigue under sustained high unit pressure, making it a reliable choice for production environments where discs see extended run times.

Key Features

• 3M Precision-Shaped Grain provides a fast cut rate and consistent performance throughout disc life
• Type 29 conical geometry optimized for right-angle grinders and surface contact efficiency
• Durable polyester backing withstands high unit pressure without delaminating
• Individual flaps break down progressively, exposing fresh abrasive grain as the disc wears
• Lower gouging risk compared to bonded wheels and fiber discs, reducing rework on finished surfaces
• Suitable for beveling, weld removal, and edge deburring on steel and other metals

Compatibility

Designed for use with right-angle grinders accepting 4.5-inch Type 29 flap discs with a standard hub configuration. Suitable for grinding and finishing operations on steel, stainless steel, and other metals.

Installation Notes

Installation and disc changes must be performed by a qualified operator with the grinder fully powered off and unplugged or battery removed. Verify the grinder's rated RPM meets or exceeds the disc's maximum RPM rating before mounting. Inspect the disc for damage before each use and do not use a disc that shows tears, delamination, or hub damage. Always use the appropriate guard and personal protective equipment, including face shield and gloves, in accordance with ANSI B11 and applicable shop safety standards.

Technical Specifications

• Disc Diameter: 4.5 inches
• Grit: 60
• Disc Type: Type 29 (Right Angle)
• Backing Material: Polyester
• Abrasive Grain: 3M Precision-Shaped Grain
• Weight: 0.45 pounds
• Package Length: 7.13 inches
• Package Width: 5.25 inches
• Package Height: 5.63 inches
• UPC: 00076308643928

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104606