3M 7010327318 Flap Disc 60 Grit Type 27 4.5 Inch

Product Description

The 3M 7010327318 is a Type 27 zirconia alumina flap disc designed for aggressive material removal on metal and weld surfaces. It features a cloth backing with 60-grit medium-grade abrasive arranged in overlapping flaps around a flat grinding profile. Rated at 13,300 RPM, it mounts via a 5/8-11 arbor hole to standard angle grinders. Zirconia alumina grain self-sharpens during use, maintaining cut rate longer than aluminum oxide alternatives. Fabricators, welders, and metalworkers use this disc for blending welds, grinding down stock, and surface conditioning on ferrous metals.

This flap disc is suited for use on angle grinders in fabrication shops, structural steel work, and maintenance grinding applications. The Type 27 flat profile is preferred for work on flat surfaces and inside angles where flush grinding contact is needed. At 4.5 inches in diameter with a 5/8-11 center hole, it fits the most common 4.5-inch angle grinders found in trade and industrial settings. The medium 60-grit rating makes it appropriate for general stock removal and weld blending rather than fine finishing passes.

Key Features

• Zirconia alumina abrasive self-sharpens for consistent cut rate throughout disc life
• Type 27 flat profile for flush grinding on flat surfaces and inside corners
• 60-grit medium grade balances stock removal speed with surface finish
• Cloth backing provides durability and flexibility under load
• 13,300 RPM max rating compatible with standard 4.5-inch angle grinders
• 5/8-11 arbor attachment fits the most common angle grinder spindle thread

Compatibility

Designed for use with 4.5-inch angle grinders equipped with a 5/8-11 spindle thread. Verify that the grinder's no-load RPM does not exceed the 13,300 RPM disc rating before mounting.

Installation Notes

Installation should be performed by qualified personnel familiar with angle grinder safety practices. Power down and disconnect the grinder from its power source before mounting or removing the disc. Inspect the disc for cracks or damage before each use and never operate above the rated maximum RPM. Appropriate personal protective equipment including eye protection and gloves is required during grinding operations.