3M 7100104941 Flap Disc 4.5 Inch 80 Grit Type 27

Product Description

The 3M 7100104941 is a Type 27 flap disc designed for medium to high-pressure metal grinding applications including beveling, weld removal, and edge deburring. Built on a durable polyester backing and loaded with 3M Precision-Shaped Grain abrasive, it measures 4.5 inches in diameter and carries an 80 grit rating. As each flap wears, it breaks down to expose fresh mineral, maintaining a consistent, fast cut rate throughout the life of the disc. Licensed tradespeople working in fabrication, structural steel, and metal finishing will find this disc appropriate for both aggressive stock removal and applications where surface finish matters.

This flap disc is suited for use on a variety of metals in both shop and field environments. It is engineered for right angle grinders in a Type 27 profile, which positions the grinding face parallel to the work surface. Typical applications include weld seam removal on mild steel, beveling operations prior to welding, and edge deburring on fabricated components. Its design reduces the risk of gouging compared to fiber discs and bonded wheels, making it a reliable choice where consistent finish quality is required alongside aggressive material removal.

Key Features

• 3M Precision-Shaped Grain delivers a fast, consistent cut rate throughout the life of the disc
• Individual flaps break down during use to continuously expose fresh abrasive mineral
• Durable polyester backing handles high unit pressure without delaminating
• Type 27 right angle profile reduces gouging risk compared to fiber discs and bonded wheels
• 80 grit rating balances aggressive stock removal with acceptable surface finish
• Suitable for beveling, weld removal, and edge deburring on a variety of metals

Compatibility

Designed for use on right angle grinders accepting 4.5 inch Type 27 flap discs. Compatible with a variety of metals including mild steel and fabricated components requiring beveling, weld removal, or deburring.

Installation Notes

Mount on a right angle grinder rated for 4.5 inch Type 27 accessories and verify the grinder RPM does not exceed the maximum rated speed of the disc before use. Ensure the grinder is fully powered off and unplugged before changing discs. Always inspect the disc for damage prior to mounting and follow applicable ANSI B7.1 safety standards for abrasive wheel use. Appropriate eye protection, hearing protection, and gloves should be worn during operation.

Technical Specifications

• Disc Diameter: 4.5 inches
• Grit: 80
• Disc Type: Type 27 (T27)
• Backing Material: Polyester
• Abrasive Grain: 3M Precision-Shaped Grain
• Weight: 2.401 pounds
• Package Length: 7.13 inches
• Package Width: 5.25 inches
• Package Height: 5.63 inches
• Sold As: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104941