Thread Locking Adhesives
Lock Seals Range
Industries Where Thread Lockers Can be Use
Ensures secure fastening in machinery operating under continuous stress.
Prevents bolt loosening in solar mounting structures exposed to wind and vibration.
WHY
Thread Lockers?
Threadlocking products prevent self-loosening and secure any threaded fastener against vibration and shock loads. They are easy flowing liquids or semi-solid adhesives which completely fill the gaps between mating threads. When Used to assemble threaded fasteners, Fasto threadlockers permanently secure threaded assemblies and eliminate Fretting corrosion by creating a unitized assembly.
Advantages of Fasto Threadlockers
- Prevent unwanted movement, loosening, leaks, and corrosion
- Resist vibration
- Clean and easy to apply
- Can be used on all sizes of fasteners
- Seal threads – allow through-hole tapping
FAQs
A thread locker is an anaerobic adhesive designed to secure threaded fasteners such as nuts, bolts, and screws. It cures in the absence of air between metal surfaces, preventing loosening caused by vibration, shock, and thermal cycling.
Thread lockers are used to prevent threaded fasteners from loosening in machinery, automotive assemblies, industrial equipment, pumps, motors, gearboxes, and other applications exposed to vibration and movement.
Thread lockers cure when confined between metal threads and deprived of oxygen. Once cured, the adhesive fills the gaps between mating threads, creating a secure bond that resists loosening and leakage.
Unlike mechanical locking devices, thread lockers provide 100% contact between threads, helping distribute load evenly while preventing loosening due to vibration, shock, corrosion, and thermal expansion.
Thread lockers are typically available in:
- Low Strength – For adjustment screws and small fasteners
- Medium Strength – For removable fasteners requiring routine maintenance
- High Strength – For permanent or heavy-duty assemblies
- Wicking Grade – For pre-assembled fasteners requiring post-assembly locking
The appropriate grade depends on maintenance and disassembly requirements.
Generally:
- Blue Thread Locker (Medium Strength) allows disassembly using standard hand tools.
- Red Thread Locker (High Strength) is intended for permanent assemblies and may require heat or special tools for removal.
Specific performance varies by product formulation.
Yes. Thread lockers are specifically designed to prevent loosening caused by vibration, shock loading, mechanical movement, and dynamic operating conditions.
Thread lockers are commonly used on:
- Steel
- Stainless Steel
- Aluminum
- Brass
- Iron Alloys
- Other Metallic Fasteners
Material compatibility may vary depending on the adhesive grade.
Yes. Thread lockers are widely used in automotive manufacturing and maintenance for securing engine components, transmissions, suspension systems, brake assemblies, and other critical fasteners.
Many industrial thread lockers are formulated to provide reliable performance across a wide temperature range. High-temperature grades are available for demanding industrial and automotive applications.
Yes. Thread locking adhesives seal the gaps between threads, helping prevent moisture ingress, corrosion, rust formation, and fretting wear.
Handling strength is often achieved within minutes to a few hours, depending on the product and substrate. Full cure typically occurs within 24 hours under normal conditions.
Yes. Thread lockers can be used on stainless steel fasteners, although certain grades may require primers or activators to optimize cure speed and performance.
Anaerobic thread locker is a type of adhesive that cures when oxygen is excluded and the adhesive is confined between metal surfaces. This technology is widely used for securing threaded assemblies.
Yes. Medium-strength thread lockers can generally be removed using standard hand tools. High-strength grades may require heat or specialized removal techniques.
Thread lockers are widely used in:
- Automotive Manufacturing
- Industrial Machinery
- Pumps and Valves
- Aerospace Components
- Renewable Energy Systems
- Electrical Equipment
- Heavy Engineering
- Construction Equipment
Key advantages include:
- Prevents fastener loosening
- Resists vibration and shock
- Protects against corrosion
- Eliminates the need for lock washers
- Improves assembly reliability
- Reduces maintenance requirements
- Enhances equipment safety
Selection depends on:
- Fastener size
- Material type
- Operating temperature
- Vibration levels
- Required removal method
- Maintenance frequency
- Strength requirements
Choosing the correct grade ensures long-term fastening reliability.
Yes. Fasto Adhesives offers a range of industrial thread locking adhesives engineered for secure fastening, vibration resistance, corrosion protection, and long-term assembly performance across multiple industries.