




LONGGUANG currently has more than 3,000 industrial brush products, covering all industries such as auto parts, mechanical parts, hydraulic parts, etc. Our products are widely used in the polishing, de-rusting, and deburring of metal parts processing; metal sheet, strip cleaning, grinding, descaling; finishing of textile, printing, and dyeing leather products, sanding; dust removal, grinding and coating of paper and artificial boards Glue; cleaning, polishing, deburring of circuit boards; cleaning of glass and LCD substrates; cleaning and descaling of pipes; sealing and dust proofing of furniture, storage, and machinery.
Couldn't load pickup availability
Product Name:
Knotted Steel Wire End Brush (Twisted Knot End Brush)
Product Size:
Customizable according to customer requirements
Refference Drawing:

Standard Series:
| Dia A | Trim B | Shaft D. C | Shaft l. D | Total l. E | Part No. | Bundle count | |
| ф0.35 Carbon Steel | ф0.5 Carbon Steel | ||||||
| 20 | 30 | 6 | 22 | 75 | BN353020 | BN503020 | 6 |
| 25 | 30 | 6 | 20 | 77 | BN353025 | BN503025 | 10 |
| 29 | 30 | 6 | 18 | 78 | BN353029 | BN503029 | 12 |
Material Composition:
Filament Material: High-tensile steel wire, twisted into rigid knots
Handle/Stem Material: Steel shank
Product Features:
Maximum aggressive action – knotted construction provides extreme stiffness for high-impact cutting stroke; most effective tool for removing thick scale, heavy rust, and stubborn weld spatter
Superior durability & safety – twisted design prevents individual wires from flexing and fatiguing, significantly reducing wire breakage for longer tool life and safer operator environment
High-speed stability – perfectly balanced for high-RPM operation on portable power tools; knots maintain shape under pressure to prevent "flaring out," ensuring consistent performance in tight spots
Compact cylindrical shape – provides exceptional cleaning and deburring action in hard-to-reach areas, internal corners, and small cavities
High deburring efficiency – removes sharp edges and burrs from cross-drilled holes and recessed areas
Long service life – twisted knot design extends brush life even under heavy-duty use
Versatile finishing capability – delivers aggressive scale removal to fine surface finishes
Applicable Scenarios:
Deburring – removing sharp edges and burrs from cross-drilled holes and recessed areas
Cleaning – efficiently removing rust, scale, paint, and oxidation from metal surfaces
Polishing – achieving smooth finish on molds, dies, and precision mechanical parts
Surface preparation – preparing internal surfaces for welding, coating, or plating
Automotive – engine block cleaning, cylinder head deburring, and brake part maintenance
Aerospace – precision cleaning of turbine blades and aircraft structural components
Machinery & tooling – maintenance of molds and dies, cleaning of hydraulic valves and fittings
Metal fabrication – general-purpose weld cleaning and surface refinement in metal workshops
Oil & gas – cleaning of pipe threads and internal valve seats
What Makes Knotted Steel Wire End Brushes Different?
Our twisted knot end brushes are engineered for the most demanding industrial cleaning and deburring tasks. Unlike standard crimped wire brushes, the wire filaments are twisted into rigid "knots" to provide high-impact action and maximum aggression for heavy-duty applications.
Our high-performance end brushes are specifically designed for use on high-speed portable power tools and CNC machining centers. Featuring a compact cylindrical shape, these brushes provide exceptional cleaning and deburring action in hard-to-reach areas, internal corners, and small cavities. Whether you need aggressive scale removal or a fine surface finish, our end brushes deliver consistent performance and a long service life.
Knotted vs. Crimped Wire End Brush
| Feature | Knotted Wire (This Product) | Crimped Wire End Brush |
|---|---|---|
| Wire structure | Twisted into rigid knots | Crimped, open wave |
| Aggressiveness | Maximum (high-impact) | Moderate (flexible) |
| Best for | Thick scale, heavy rust, weld spatter | Light rust, general cleaning |
| Wire breakage | Significantly reduced | Moderate |
| Flaring under pressure | No (maintains shape) | Yes (can flare out) |
| High-RPM stability | Excellent (balanced) | Good |
| Tool life | Extended | Standard |
| Operator safety | Enhanced (less wire throw) | Standard |
Key Applications in Detail
Automotive
Engine block cleaning, cylinder head deburring, and brake part maintenance require aggressive action to remove stubborn deposits. Our knotted end brushes reach internal passages and recessed areas that standard tools cannot access.
Aerospace
Precision cleaning of turbine blades and aircraft structural components demands controlled aggression. The twisted knot design provides the cutting power needed while maintaining safety and precision on sensitive aerospace alloys.
Machinery & Tooling
Maintenance of molds and dies, cleaning of hydraulic valves and fittings requires tools that can reach tight spaces without losing cutting effectiveness. The rigid knotted structure prevents flaring, ensuring consistent performance in confined areas.
Metal Fabrication
General-purpose weld cleaning and surface refinement in metal workshops benefit from the versatility of knotted end brushes – aggressive enough for weld spatter removal yet controllable for surface finishing.
Oil & Gas
Cleaning of pipe threads and internal valve seats requires a brush that can conform to threaded geometries while delivering aggressive scale removal. The knotted design maintains its shape for consistent thread cleaning.
Tough Surface Preparation
Ideal for heavy-duty cleaning of weld joints, surface preparation before heavy coating, and cleaning of large castings or structural steel.
For Less Aggressive Applications
If your application requires lighter cleaning, flexible conformity to irregular surfaces, or less aggressive action, consider our Steel Wire End Brush with standard crimped wire construction.
For precision applications requiring encapsulated wire protection and non-marring surface contact, see our Rubber Coated Steel Wire End Brush.
Related Products You May Need:
For lighter duty cleaning, see Steel Wire End Brush
For encapsulated wire protection, explore Rubber Coated Steel Wire End Brush
For abrasive filament finishing, check Ceramic Abrasive End Brush and Abrasive Bristle End Brush
For ceramic fiber precision finishing, see Ceramic Fiber End Brush
Browse the full End Brush Series
Why Choose Knotted Steel Wire End Brushes for Heavy-Duty Applications?
In demanding industrial environments, standard brushes wear out too quickly or lack sufficient cutting power. Our knotted steel wire end brushes deliver:
Maximum aggression – twisted knot design for high-impact scale and rust removal
Extended tool life – reduced wire fatigue means fewer tool changes and lower operating costs
Operator safety – significantly reduced wire breakage minimizes projectile hazards
Consistent performance – knots maintain shape under pressure, no flaring in tight spots
High-RPM compatibility – balanced design for portable power tools and CNC machines
Versatile application range – from heavy weld spatter removal to controlled surface finishing
Customization Available
We offer custom brush diameters, stem lengths, wire thicknesses, and knot densities to match your specific heavy-duty cleaning and deburring requirements. Contact us for technical recommendations.
Q1: What is the main difference between a Twisted Knot and a Crimped Wire end brush?
A: It's all about the intensity. A Twisted Knot brush is much more aggressive and rigid, designed for heavy material removal. A Crimped Wire brush is more flexible and is better suited for lighter cleaning and producing a smoother surface finish without as much impact.
Q2: Can I use the Twisted Knot brush on Stainless Steel or Aluminum?
A: Yes, but you must select our Stainless Steel (INOX) wire version. Using a standard carbon steel brush on stainless steel will leave carbon particles behind, leading to surface contamination and "after-rust."
Q3: Why are the knots on my brush wearing unevenly?
A: Uneven wear is often caused by applying too much side pressure. To get the best results and longest life, let the wire tips do the work. The twisted knot is designed to impact the surface directly; excessive leaning or pressure can cause premature wire breakage.
Q4: What are the safety requirements for using these high-impact brushes?
A: Due to the aggressive nature and high RPMs, we strictly recommend using a full-face shield, heavy-duty gloves, and protective aprons. Always ensure the tool's RPM does not exceed the "Max RPM" stamped on the brush.
Q5: Do you offer different knot styles or wire gauges?
A: Yes. As a professional manufacturer, Longguang Brush can customize the number of knots, the wire diameter, and the trim length to match your specific industrial requirements. Contact our team for custom specifications.
Thanks for subscribing!
This email has been registered!