3M 7010300168 Flap Disc 577F 7 Inch 40 Grit Alumina Zirconia

Product Description

The 3M 7010300168 is the 577F flap disc, a coated abrasive tool built for high-pressure metalworking. It uses alumina zirconia mineral combined with a grinding aid to deliver faster stock removal than standard aluminum oxide discs across steel, stainless, and other metal types. At 7 inches in diameter with a 40-grit cut, it handles aggressive material removal while still leaving a blended surface finish. Heavyweight polyester-backed flaps give the disc extended service life under sustained load, making it a practical choice for weld removal, beveling, and sharp-edge work in a single pass.

This disc is suited for use on angle grinders in fabrication shops, structural steel work, pipeline work, and heavy manufacturing environments. Its quick-change design reduces downtime between disc swaps. The 40-grit rating makes it appropriate for initial grinding stages where fast cutting and some surface conditioning are needed simultaneously. Trade professionals working in metal fabrication, ironwork, and pipe fitting will find it fits standard high-pressure finishing workflows without requiring a separate blending step.

Key Features

• Alumina zirconia mineral with grinding aid cuts faster than aluminum oxide on all metal types
• Flap design combines grinding and blending into one step, reducing total tool changes
• Heavyweight polyester-backed flaps extend disc life under high-pressure use
• 7 inch diameter at 40 grit suits weld removal, beveling, and sharp-edge applications
• Quick-change disc format simplifies replacement on angle grinders

Compatibility

Designed for use on standard angle grinders accepting 7 inch flap discs in high-pressure metalworking applications including weld removal, beveling, and edge blending on steel and other metals.

Installation Notes

Flap discs of this type are mounted and serviced by metalworking tradespeople and fabricators using angle grinders. Confirm the grinder is rated for the disc diameter and RPM before mounting. Power down and unplug or de-energize the grinder before changing discs. Always verify the disc is properly seated and the guard is in place before resuming operation.

Technical Specifications

• Disc Diameter: 7 inches
• Grit: 40
• Disc Type: Flap
• Abrasive Mineral: Alumina Zirconia
• Backing Material: Heavyweight Polyester
• Weight: 0.68 pounds
• UOM: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010300168