3M 7100104615 Flap Disc 80 Grit Ceramic Type 29 4.5 in

Product Description

The 3M 7100104615 is a Type 29 ceramic flap disc designed for aggressive material removal and blending on metal surfaces. It measures 4.5 inches in diameter with a 5/8-11 arbor hole and runs at a maximum of 13,300 RPM. The 80-grit ceramic abrasive delivers consistent cut rates on steel, stainless steel, and hard alloys. A polyester backing supports the flap construction under lateral grinding pressure. This disc is rated medium grade and is built for use on angle grinders in fabrication, welding prep, and surface conditioning applications installed by metalworkers and maintenance trades.

This flap disc is suited for residential and commercial metalworking environments where a Type 29 angled disc is required for grinding and blending in a single pass. The conical flap geometry allows for comfortable edge work and flat surface blending on weld seams, castings, and structural steel. It fits standard 4.5-inch angle grinders with a 5/8-11 threaded spindle, which is the most common configuration in trade shops and field fabrication work.

Key Features

• 80-grit ceramic abrasive for aggressive cutting and extended disc life on hard metals
• Type 29 conical flap geometry enables both flat surface and edge grinding
• 4.5-inch diameter with 5/8-11 arbor fits standard angle grinders
• Polyester backing resists heat and flexing under heavy lateral load
• Maximum rated speed of 13,300 RPM compatible with most 4.5-inch grinders
• Medium grade coated abrasive construction for balanced cut rate and finish

Compatibility

Designed for use on 4.5-inch angle grinders equipped with a 5/8-11 threaded spindle arbor. Suitable for grinding and blending operations on steel, stainless steel, and similar hard metal substrates.

Installation Notes

This disc is installed by metalworkers, fabricators, and maintenance technicians using a standard angle grinder. Always verify the grinder spindle speed does not exceed the 13,300 RPM maximum rating before mounting. Inspect the disc for damage before each use and confirm the arbor nut is securely tightened. Follow ANSI B7.1 safety standards and wear appropriate face and eye protection during operation.