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Würth

Würth High-Strength Threadlocker

Würth High-Strength Threadlocker

Key Features

  • High-strength bonding for threaded connections exposed to extreme stresses.
  • Connections can only be removed by heating to > 250°C.
  • Provides a 100% seal - eliminating the need for additional securing parts.
  • Prevents loosening caused by vibration and shock loads.
  • Protects against corrosion, friction wear, and rust.
  • Excellent chemical and thermal resistance (-55°C to 150°C).
  • NSF-tested (NSF/ANSI 61) - safe for use in service water and drinking water applications.
  • DOS one-handed dispensing system with adjustable output, clean application, and minimal waste.
  • Silicone-, solvent- and oil-free formulation for clean and safe use.
Size

24 in stock

£24.99 GBP
£24.99 GBP
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Description

Permanent High-Strength Thread Retention

Würth High-Strength Threadlocker is a dimethacrylic ester-based anaerobic adhesive developed for critical threaded connections that must remain permanently locked. Once cured, connections can only be released by applying heat above 250 °C, ensuring maximum security against loosening.

Full Seal and Corrosion Protection

The threadlocker forms a 100% seal, preventing leaks, corrosion, and rust formation. By eliminating the need for additional mechanical retainers, it offers a cleaner, more efficient, and more reliable solution for long-term threaded fastening.

Engineered for High-Stress Applications

With excellent resistance to vibration, shock, and aggressive chemicals, this adhesive is ideally suited for use in the automotive, commercial vehicle, shipbuilding, toolmaking, mechanical engineering, engine construction, and electrical industries. It is effective on bolts, nuts, stud bolts, plugs, thread inserts, and bearings.

DOS Dispensing System EfficiencyS

Thanks to the Würth DOS system, users benefit from single-handed operation, continuously adjustable dispensing, and complete container emptying with virtually no waste. This reduces consumption, improves workflow, and minimises costs.

Safe for Drinking Water Applications

Certified under NSF/ANSI 61, this threadlocker is suitable for use in drinking water and service water systems, further expanding its application scope.

Technical Information

Specifications

Chemical Basis: Dimethacrylic acid ester

Colour: Green fluorescent

Density: 1.11 g/cm³ (DIN EN ISO 2811-1)

Viscosity: 500–900 mPas at 25 °C (Brookfield RVT, spindle 2/20 rpm)

Suitable For Threads Up To: M25

Gap-Filling Ability: Max. 0.15 mm

Initial Strength: 5–15 min

Functional Strength: 1–3 h

Final Strength: 3–6 h

Compressive Shear Strength: 15–30 N/mm² (ISO 10123)

Breakaway Torque: 30–60 Nm (DIN EN 15865)

Prevail Torque: 10–30 Nm (DIN EN 15865)

Processing Temperature: +5 °C to +35 °C

Temperature Resistance (Cured): –55 °C to +150 °C

Flash Point: Min. 100 °C

Shelf Life: 18 months (room temperature)

Weight of Content: 25 g

Silicone-Free: Yes

Solvent-Free: Yes

Fully Curing Conditions: Absence of oxygen, contact with metal (copper or iron ions)

Documents

Application Instructions

  1. Ensure all threaded surfaces are clean, dry, and free of dust, grease, and contaminants.
  2. Apply a sufficient amount of threadlocker to the adhesive surfaces.
  3. Assemble the parts immediately after application.
  4. Allow the adhesive to cure.

Safety and Usage Notes

  • Removal requires heating to >250°C.
  • Do not use on plastics such as ABS, celluloid, polycarbonate, PMMA, SAN, or painted surfaces (risk of damage with prolonged contact).
  • Shelf life: 18 months at room temperature.
  • Always wear protective gloves and eyewear when applying.
  • Use in a well-ventilated environment.