Tru-maxx 66254443435 Flap Disc 40 Grit 7 Inch Type 29

Product Description

The TRU-MAXX 66254443435 is a 7-inch Type 29 flap disc designed for coarse stock removal on steel and stainless steel surfaces. Built with zirconia alumina abrasive bonded to a poly-cotton backing, this disc delivers aggressive cutting action and extended service life compared to standard aluminum oxide alternatives. The Type 29 conical geometry presents the abrasive at an angle, concentrating grinding pressure and making it well-suited for weld blending, edge work, and surface conditioning on flat and contoured workpieces. Rated at 8,600 RPM maximum, it mounts via a 5/8-11 threaded arbor hole for direct attachment to standard angle grinders.

This flap disc is intended for fabrication shops, welding operations, and maintenance applications where coarse material removal or weld cleanup on steel or stainless steel is required. The GP-Z series designation indicates a general-purpose zirconia formulation suited for production grinding where consistent cut rate and abrasive longevity matter. It is a practical choice for ironworkers, pipefitters, welders, and metal fabricators working with both mild steel and stainless steel stock.

Key Features

• Zirconia alumina abrasive provides aggressive cut rate and longer disc life on ferrous metals
• Type 29 conical design concentrates grinding pressure for weld blending and edge work
• 5/8-11 threaded arbor hole for direct mount on standard angle grinders
• Poly-cotton backing for flexibility and durability during heavy grinding
• 8,600 RPM maximum speed rating for safe use on common 7-inch angle grinders
• Coarse 40 grit for rapid stock removal and weld seam cleanup

Compatibility

Compatible with material applications including steels and stainless steel. Designed for use on angle grinders with a 5/8-11 spindle thread accepting 7-inch flap discs and a free-speed rating at or below 8,600 RPM.

Installation Notes

Installation is performed by metalworking trades including fabricators and welders using a standard angle grinder. Ensure the grinder is disconnected from power before mounting or removing the disc. Verify the grinder free-speed does not exceed the 8,600 RPM disc rating before operation. Inspect the disc for damage before each use and discard any disc showing tears, delamination, or exposed backing.