3M 7100049189 Cubitron Ii 967A Flap Disc 5 Inch 40 Grit

Product Description

The 3M 7100049189 is a Type 29 right-angle flap disc built on the Cubitron II 967A platform and powered by 3M Precision-Shaped Grain. At 5 inches in diameter and 40 grit, it delivers a fast, aggressive cut suited to medium-pressure grinding tasks including weld leveling, light deburring, and surface preparation before paint. The poly-cotton backing promotes controlled, even wear as individual flaps break down progressively, exposing fresh abrasive mineral throughout the life of the disc. Licensed trades and fabrication shops alike rely on this disc for consistent material removal without the gouging common to fiber discs and bonded wheels.

This disc is designed for medium-duty metalworking on both flat and contoured surfaces. It performs well on mild steel weld removal and surface prep, and it is also suited to stainless steel fabrication where finish quality and gouge resistance matter. The 40-grit cut rate and disc geometry make it a practical choice for angle grinder work in structural steel, pipe fabrication, and general sheet metal shops. Each disc is sold as an individual unit.

Key Features

• 3M Precision-Shaped Grain delivers a fast cut rate and extended disc life compared to conventional abrasive grain
• Right-angle Type 29 geometry suits both flat and contoured workpiece surfaces
• Poly-cotton backing provides controlled, even wear under medium unit pressure
• Progressive flap breakdown continuously exposes fresh mineral for a consistent cut rate throughout disc life
• Less gouging than fiber discs and bonded wheels, reducing rework on finish-critical stainless steel work
• Effective for weld leveling, light deburring, and paint-prep on mild and stainless steel

Compatibility

Designed for use on right-angle grinders accepting 5-inch diameter flap discs. Suitable for mild steel and stainless steel applications requiring medium-pressure surface preparation or weld leveling.

Installation Notes

Mount only on angle grinders rated for the disc diameter and maximum RPM marked on the disc. Ensure the grinder is powered off and unplugged before disc changes. Wear appropriate PPE including a face shield and grinding gloves during operation. Follow ANSI B7.1 and tool manufacturer guidelines for abrasive wheel mounting and use.

Technical Specifications

• Diameter: 5 inches
• Grit: 40
• Disc Type: Right Angle Flap Disc (Type 29)
• Abrasive Series: Cubitron II 967A
• Backing Material: Poly-cotton
• Unit of Measure: Each
• Weight: 3.996 pounds
• Package Length: 8.88 inches
• Package Width: 5.75 inches
• Package Height: 6.13 inches
• UPC: 051141541797

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100049189