Norton 66623399155 Flap Disc 36 Grit Type 27 7 Inch

Product Description

The NORTON 66623399155 is a Type 27 zirconia alumina flap disc designed for aggressive material removal on angle grinders. Rated at 8,600 RPM maximum, this 7-inch disc mounts via a 5/8-11 arbor attachment and delivers very coarse 36-grit cutting action on a cloth backing. The trimmable design allows the flap edges to be dressed as they wear, extending usable life and maintaining consistent cut performance. Metal fabricators, welders, and general trade mechanics use this disc for weld blending, surface conditioning, and stock removal on steel and other hard metals.

This disc is suited for heavy-duty grinding and blending applications in fabrication shops, construction sites, and maintenance environments. The Type 27 flat-profile design provides a low grinding angle ideal for work on flat and contoured surfaces. The zirconia alumina abrasive grain self-sharpens during use, sustaining cut rate through the disc life. It mounts on standard 5/8-11 threaded angle grinders commonly used in professional metalworking trades.

Key Features

• Zirconia alumina abrasive grain for high cut rate and self-sharpening performance
• 36 grit very coarse grade for aggressive stock removal and weld blending
• Type 27 flat-profile disc geometry for low-angle grinding on flat surfaces
• 8,600 RPM maximum speed rating for use on standard 7-inch angle grinders
• Trimmable cloth backing extends disc life as flaps wear
• 5/8-11 arbor mount fits the most common professional angle grinder spindles

Compatibility

Designed for use on 7-inch angle grinders with a 5/8-11 threaded spindle. Verify that the grinder free-speed rating does not exceed 8,600 RPM before mounting.

Installation Notes

Installation should be performed by a qualified operator familiar with angle grinder safety practices. Always power down and disconnect the grinder from its power source before mounting or removing a disc. Confirm the disc RPM rating meets or exceeds the grinder free-speed rating per ANSI B7.1 guidelines. Never exceed the maximum RPM stamped on the disc, and inspect the disc for damage before each use.