3M 7100178030 Flap Disc 769F 60 Grit Type 27 7 Inch

Product Description

The 3M 7100178030 is a coated abrasive flap disc in the 769F series, designed for grinding, blending, and surface preparation on metal. Built around 3M Precision-Shaped Grain, this disc cuts faster and outlasts conventional aluminum oxide and alumina zirconia flap discs. The Type 27 (flat) profile fits standard angle grinders with a 7/8 inch arbor. At 7 inches in diameter and 60 grit, it handles aggressive stock removal while maintaining consistent cut rate as individual flaps wear and expose fresh mineral. Licensed trades and fabrication shops use this disc for carbon steel, stainless steel, and heat-sensitive alloys.

This disc is suited for weld grinding, beveling, and general surface prep in fabrication, maintenance, and repair environments. The 60-grit specification makes it appropriate for moderate-to-aggressive material removal rather than fine finishing. It performs on carbon steel and stainless steel without generating excess heat that could affect alloy integrity. The Type 27 flat geometry allows flush grinding against flat surfaces and inside corners, giving the technician flexibility across common metalworking tasks in both shop and field settings.

Key Features

• 3M Precision-Shaped Grain cuts faster and lasts longer than conventional aluminum oxide or alumina zirconia abrasive grain
• Individual flaps break down progressively, continuously exposing fresh mineral for a consistent cut rate throughout disc life
• 7 inch diameter, 60 grit, Type 27 flat profile for flush surface contact
• 7/8 inch arbor fits standard angle grinder spindles
• Suitable for carbon steel, stainless steel, and other heat-sensitive alloys
• Covers weld grinding, beveling, and surface prep in a single disc selection

Compatibility

Designed for use with standard angle grinders accepting a 7 inch, 7/8 inch arbor Type 27 flap disc. Suitable for grinding and surface preparation on carbon steel, stainless steel, and heat-sensitive alloys.

Installation Notes

Mounting and operation of abrasive flap discs should be performed by qualified personnel following ANSI B7.1 and grinder manufacturer guidelines. Verify the grinder RPM rating meets or exceeds the disc RPM rating before mounting. Inspect the disc for damage before each use and never use a disc that shows cracking, tearing, or delamination. Wear appropriate PPE including eye protection, face shield, and gloves during operation.

Technical Specifications

• Disc Diameter: 7 inches
• Arbor Size: 7/8 inch
• Grit: 60
• Disc Type: Type 27 (Flat)
• Abrasive Type: Coated Flap Disc
• Grain Technology: 3M Precision-Shaped Grain
• Weight: 2.308 pounds
• Package Dimensions: 7.7 x 7.7 x 6.2 inches
• Sold As: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100178030