Walter 3-Inch Stainless Steel Knot Cup Brush 5/8-11 Arbor

Name: Walter 3-Inch Stainless Steel Knot Cup Brush 5/8-11 Arbor
Brand: Welders Helper
SKU: 13F314
Price: 50.00 CAD
Availability: InStock

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SKU: 13F314 Categories: Abrasives, Bench Grinding Wheels

OVERVIEW

Tough on Rust, Gentle on the Operator

Every welder knows the frustration of a cheap wire brush that sheds bristles and vibrates the hands numb. The Walter 3" Stainless Steel Knot Twisted Cup Brush is built to solve those problems, delivering a smooth, powerful cleaning experience that stands up to the toughest shop environments. Whether you are prepping a critical joint or cleaning up a finished weld, this brush is designed to work as hard as you do. The 13F314 model is specifically outfitted with stainless steel wire, making it the go-to choice for stainless fabrication jobs where carbon steel contamination is a strict no-go.

The secret to this brush's performance lies in its knot-twisted construction. Each knot acts like a rigid impact tool, hammering away slag, spatter, and heavy rust with every rotation. This aggressive action is perfect for digging out slag inclusions or stripping down edges for a clean start. Despite its aggressive nature, the brush is manufactured with precision balance. This means it spins true on your grinder, eliminating the wobble and "hop" associated with inferior brushes. The result is a smoother run that lets you control the tool with more accuracy and less physical strain on your wrists and arms.

Durability is another hallmark of the Walter brand. The top-quality wire used in this cup brush resists fatigue and breakage, ensuring a longer service life and fewer brush changes. It features a standard 5/8"-11 threaded hub, making it compatible with the vast majority of 4-1/2" and 5" angle grinders found in welding shops across the country. When you need to clean stainless steel fast and effectively, reach for the Walter 13F314.

Why Welders Choose This Brush

Aggressive Cleaning: Knotted wire cuts through the heaviest buildup quickly.
Stainless Compatible: Safe for use on 304, 316, and other stainless grades.
Smooth Running: Balanced design reduces grinder vibration.
Long Life: High-tensile wire resists snapping and wearing down prematurely.

Additional Information
Brand:Walter Surface Technologies
Size:3
Arbor In:5/8"
Wheel Style:Twist Knot
Item:Brush
Used To Grind:Stainless
Packaging Description:1-per-each
Wire Material:Stainless Steel
Wire Type:Knot-Twisted
Thread Size:5/8"-11
Application:Heavy-duty cleaning, Deburring, Weld cleaning

INCLUDED

1x 3" Stainless Steel Knot Twisted Cup Brush (5/8"-11 Arbor)

APPLICATIONS

Deburring machined stainless steel parts
Cleaning weld seams and removing heat discoloration
Removing heavy rust, scale, and corrosion
Surface preparation before welding or coating
Removal of weld spatter on stainless steel structures

FAQ

This brush features a standard 5/8"-11 threaded arbor, designed to screw directly onto the spindle of most 4.5-inch and 5-inch angle grinders.

While it will physically work on carbon steel, it is not recommended if you plan to use the brush on stainless steel later. Using it on carbon steel will embed iron particles into the wire, which can then be transferred to stainless steel, causing rust/contamination.

Knot twisted wire is much stiffer and more aggressive, making it suitable for heavy-duty cleaning, deburring, and removing thick scale. Crimped wire is more flexible and better for light cleaning or surface finishing.

Always check the physical stamping on the brush cup for the exact Max RPM rating. Ensure your angle grinder's RPM does not exceed the rating on the accessory.

Stainless steel brushes can be used on aluminum to prevent iron contamination, but for optimal performance on aluminum, specific brushes designed to resist loading (clogging) are often preferred. However, this brush is safe to use on aluminum regarding contamination.

No, the brush itself does not include a guard. You must always use the safety guard provided with your angle grinder and wear appropriate PPE, including eye and face protection.

The overall diameter of the cup brush is 3 inches.

A balanced brush reduces vibration, which protects the grinder's bearings from premature wear and significantly reduces operator fatigue during extended use.