3M 7100104876 Flap Disc 80 Grit 4.5 Inch Type 29

Product Description

The 3M 7100104876 is a Type 29 flap disc engineered for medium to high-pressure metal grinding applications. Built on a durable polyester backing and loaded with 3M Precision-Shaped Grain, this 4.5-inch, 80-grit disc delivers a fast, consistent cut rate across a range of ferrous and non-ferrous metals. As the individual flaps wear, they break down to expose fresh abrasive mineral, maintaining cut performance throughout the life of the disc. Licensed tradespeople and fabricators use it for jobs where both material removal speed and surface finish quality matter.

This disc is suited for beveling, weld removal, and edge deburring on structural steel, stainless, and similar metals. The Type 29 conical profile pairs with right-angle grinders, giving the operator better contact angle control on flat and contoured workpieces. The polyester backing handles high unit pressure without delaminating, making it appropriate for production fabrication environments as well as field repair work. Its design reduces the risk of gouging compared to bonded wheels and fiber discs, which is useful when finish quality is a requirement alongside material removal.

Key Features

• 3M Precision-Shaped Grain delivers fast, consistent cut rate for the life of the disc
• Durable polyester backing withstands high unit pressure applications
• Individual flaps break down progressively, exposing fresh abrasive mineral
• Type 29 right-angle profile improves contact on flat and contoured surfaces
• Lower gouging risk compared to fiber discs and bonded grinding wheels
• Suitable for applications where surface finish is a requirement alongside material removal

Compatibility

Designed for use with standard right-angle grinders accepting 4.5-inch Type 29 flap discs.

Installation Notes

Mounting and disc changes must be performed with the grinder unplugged or the power source locked out. Verify that the grinder RPM rating meets or exceeds the maximum rated speed of the disc before operation. Eye protection, gloves, and appropriate face shielding are required during use. Inspect the disc for damage before each use and discard any disc showing delamination, tears, or visible damage to the backing.

Technical Specifications

• Disc Diameter: 4.5 inches
• Grit: 80
• Disc Type: Type 29 (Right Angle)
• Abrasive Grain: 3M Precision-Shaped Grain
• Backing Material: Polyester
• Package Weight: 2.89 pounds
• Package Length: 8.88 inches
• Package Width: 5.75 inches
• Package Height: 6.13 inches
• Unit of Measure: Each
• Minimum Order Quantity: 10
• UPC: 076308644203

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104876