3M 7010363143 Flap Disc 577F 4.5 in 60 Grit T27 Alumina Zirconia

Product Description

The 3M 7010363143 is the 577F alumina zirconia flap disc, a coated abrasive tool designed for high-pressure metalworking applications. Built on a Type 27 (flat) hub profile and rated to 13,300 RPM, this 4.5-inch disc combines grinding and surface blending into a single pass. Heavyweight polyester-backed flaps carry alumina zirconia mineral with a grinding aid, delivering more cutting power than standard aluminum oxide across ferrous and non-ferrous metal types. It is sized and rated for use with standard 4.5-inch angle grinders common on fabrication floors and job sites.

This flap disc is suited for heavy-duty metalworking tasks including weld removal, beveling, and sharp-edge work on structural steel, stainless steel, and other metal substrates. The 60-grit cut is coarse enough for aggressive stock removal while leaving a blended finish that reduces or eliminates secondary finishing steps. It is sold individually and used by metal fabricators, ironworkers, pipefitters, and welders in both shop and field environments.

Key Features

• Alumina zirconia mineral with grinding aid cuts faster than aluminum oxide on all metal types
• Type 27 flat profile suits flat surface and slight contour grinding
• 60 grit removes stock aggressively while blending surface finish in one step
• Heavyweight polyester backing extends disc life under sustained high-pressure use
• Rated to 13,300 RPM for compatibility with standard 4.5-inch angle grinders

Compatibility

Designed as a direct-fit replacement disc for standard 4.5-inch angle grinders accepting Type 27 flap discs with a 7/8-inch arbor hole, suitable for metalworking applications requiring coarse-grit stock removal and surface blending.

Installation Notes

Installation should be performed by a qualified operator following grinder and disc manufacturer safety guidelines. Verify the grinder's maximum RPM rating meets or exceeds the disc's 13,300 RPM rating before mounting. Inspect the disc for damage before each use and never use a disc that shows signs of delamination or cracking. Always use the appropriate guard and personal protective equipment including eye and face protection when operating angle grinders.

Technical Specifications

• Disc Diameter: 4.5 inches
• Grit: 60
• Disc Type: Type 27 (Flat)
• Maximum Speed: 13,300 RPM
• Abrasive Mineral: Alumina Zirconia
• Backing Material: Heavyweight Polyester
• Package Weight: 0.26 pounds
• Package Length: 8.88 inches
• Package Width: 5.75 inches
• Package Height: 6.13 inches
• Sold As: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010363143