Tru-maxx 66254443444 Flap Disc 40 Grit 4.5 in Type 29

Product Description

The TRU-MAXX 66254443444 is a Type 29 angled flap disc designed for aggressive material removal on steel and stainless steel. It measures 4.5 inches in diameter with a 5/8-11 threaded arbor hole for direct mounting on standard angle grinders. The abrasive material is zirconia alumina, a coarse 40-grit construction rated for up to 13,300 RPM. The disc uses a high-density flap configuration on a poly-cotton backing, which supports consistent cut rate and extended flap life compared to standard-density alternatives. Fabricators, pipe fitters, and metal workers reaching for a grinding disc for weld blending, stock removal, or surface prep will find this disc suited to the task.

This flap disc is applied in metal fabrication, structural steel work, and maintenance grinding where a coarse cut is needed on ferrous and non-ferrous surfaces. Typical applications include weld seam removal, bevel grinding, and surface conditioning on mild steel and stainless steel workpieces. The Type 29 conical geometry allows more abrasive contact at an angle, making it effective on flat surfaces and contours alike. It fits angle grinders commonly used in shop and field environments.

Key Features

• Type 29 conical flap geometry for aggressive stock removal at a working angle
• Zirconia alumina abrasive for durability on steel and stainless steel
• 40 grit coarse grade suited for weld removal and heavy surface prep
• High-density flap construction extends disc service life
• 5/8-11 threaded arbor hole fits standard angle grinder spindles
• Poly-cotton backing provides flexibility and support under load

Compatibility

Designed for use on angle grinders with a 5/8-11 threaded spindle accepting a 4.5-inch flap disc. Rated for steel and stainless steel material applications.

Installation Notes

Installation and use should be performed by qualified personnel familiar with abrasive wheel safety. Verify the grinder spindle speed does not exceed the disc maximum RPM rating before mounting. Inspect the disc for damage before each use and never use a disc that shows cracks, tears, or delamination. Always use the appropriate guard on the angle grinder per the tool manufacturer requirements and applicable ANSI B11 or OSHA abrasive wheel standards.