13F312 - Walter 3-Inch Stainless Steel Knot Cup Brush M14 Thread

Heavy-Duty Stainless Steel Cleaning Power

The Walter 13F312 3-inch Cup Brush is a premium abrasive tool designed specifically for heavy-duty surface preparation and cleaning on stainless steel materials. Manufactured by Walter Surface Technologies, a leader in industrial surface treatment, this brush features high-quality stainless steel wire construction. Using stainless steel wire is critical when working on stainless substrates to avoid "after-rust" or cross-contamination that can occur if carbon steel brushes are used. This ensures that the corrosion resistance of your workpiece remains intact after the cleaning process is complete.

Engineered with a knot-twisted design, this cup brush is built for aggression. Unlike crimped wire brushes which are better suited for light surface cleaning, the twisted knots provide high-impact action capable of removing heavy scale, thick rust, stubborn weld spatter, and corrosion. The 3-inch diameter is an optimal size for covering significant surface areas while still remaining maneuverable on standard angle grinders. It is particularly effective for cleaning weld edges prior to inspection or subsequent welding passes.

A key feature of this specific model is its M14 x 2.0 threaded arbor. This metric thread specification is designed to fit specific European or metric-spindle angle grinders, ensuring a safe and secure connection. Users must verify their grinder's spindle size before purchase, as this will not fit standard North American 5/8"-11 spindles. Walter brushes are renowned for their perfect balance, which significantly reduces vibration during operation. Less vibration means less operator fatigue and smoother tool handling, leading to a more consistent finish and safer working environment.

Whether you are deburring machined parts, cleaning large metal plates, or prepping surfaces for coating, the Walter 13F312 delivers consistent, high-performance results. Its durability and resistance to wire fatigue make it a cost-effective choice for industrial fabrication shops, shipyards, and maintenance departments requiring reliable abrasive solutions.