3M 7100104885 Flap Disc 7 Inch 40 Grit Right Angle

Product Description

The 3M 7100104885 is a 7-inch right-angle flap disc engineered for medium to high-pressure metal grinding applications. Built on a durable polyester backing and loaded with 3M Precision-Shaped Grain at 40 grit, this disc delivers a fast, consistent cut across a range of metals while still producing a smooth surface finish. As individual flaps wear down, they expose fresh abrasive mineral, maintaining cut rate throughout the life of the disc. Metalworkers, fabricators, and maintenance trades reach for this disc when beveling, removing welds, or deburring edges where both speed and finish quality matter.

This flap disc is well suited for fabrication shops, structural steel work, and general metal finishing in both residential and commercial settings. The right-angle configuration makes it compatible with standard 7-inch right-angle grinders used in everyday trade work. At 40 grit, it is aggressive enough for stock removal and weld blending without the gouging risk associated with fiber discs or bonded abrasive wheels. It performs on mild steel, stainless steel, and other common metals encountered in fabrication and maintenance applications.

Key Features

• 40-grit 3M Precision-Shaped Grain provides an exceptionally fast cut rate for aggressive stock removal
• Durable polyester backing withstands high unit pressure during beveling, weld removal, and edge deburring
• Individual flaps break down progressively, continuously exposing fresh mineral for a consistent cut throughout disc life
• Lower risk of gouging compared to fiber discs and bonded wheels, making finish control easier
• Right-angle geometry fits standard 7-inch angle grinders used across fabrication and maintenance trades
• Suitable for applications where a smooth surface finish is required alongside aggressive material removal

Compatibility

Designed for use with standard 7-inch right-angle grinders. Suitable for grinding and finishing mild steel, stainless steel, and similar metals in fabrication, structural, and maintenance applications.

Installation Notes

Flap discs should be mounted and changed by qualified personnel following the grinder manufacturer's instructions and applicable ANSI safety standards for abrasive products. Inspect the disc for damage before each use and never operate above the rated RPM marked on the disc. Wear appropriate PPE including eye and face protection, and ensure workpiece and grinder are stable before beginning grinding operations.

Technical Specifications

• Disc Diameter: 7 inches
• Grit: 40
• Disc Type: Right Angle Flap Disc
• Backing Material: Polyester
• Abrasive Grain: 3M Precision-Shaped Grain
• Weight: 2.864 pounds
• Package Dimensions: 7.7 x 7.7 x 6.2 inches
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104885