Excellence is our Passion
Invented 50 years ago by Loctite Corporation, now Henkel Corporation, this revolutionary method to lock and seal threaded fasteners with liquid anaerobic adhesives has found worldwide acceptance. Suited for a wide range of applications, from delicate electronic components to heavy industrial equipment, LOCTITE® threadlockers have dramatically increased the reliability of threaded assemblies.
Why Use Loctite Threadlockers?
Outperform Locking Devices
No on-torque adjustments needed and better clamp load retention compared to all mechanical locking devices.
Material Cost and Processing
Ease of automation reduces assembly costs and increases throughput. Lower cost per unit compared to most locking devices.
Protection
Seals against corrosion and leakage and acts as a thread lubricant with high chemical resistance
Easy Disassembly
using hand tools when low- or medium-grade formula is selected.
Reliable Assembly
Lock against vibration, shock and thermal cycling – plus seal against corrosion and galling
Inventory
Reduce inventory costs with products that are suitable for all shapes and sizes of fasteners. “One size fits all;” universally applicable for a wide range of fastener sizes.
How does a Loctite threadlocker work?
Fill Gaps
LOCTITE® threadlockers are single-component adhesives that cure in the absence of air and in contact with active metal to form a tough thermoset plastic. They completely fill all voids between the interfacing threads, which makes the assembly a unitized component and ultimately prevents loosening.
Seal Threads
Another property of LOCTITE® threadlockers is thread sealing. This property is especially important when assembling through-bolts in an oil reservoir or cooling jacket in order to keep the fluids sealed in and corrosion out. Examples of this application are common, but not limited, to gearboxes and internal combustion engines.
OUR BEST-SELLING PRODUCTS
LOCTITE 272: High Strength - Permanent
LOCTITE 243: High Strength - Permanent
LOCTITE 242: Medium Strength - Removable
LOCTITE 248: Medium Strength - Removable
Primerless Products
Speed and Performance
LOCTITE® 243™ Medium Strength and LOCTITE® 263™ High Strength Threadlockers
The LOCTITE® 243™ Medium Strength and 263™ High Strength Threadlockers offer all of the performance properties of the original LOCTITE® 242® and 262™ products, plus more, to meet the ever-changing, ever-demanding industrial environments of today and tomorrow.
- High temperature performance able to withstand temperatures up to 360°F (182°C)
- Improved cure performance on oil-contaminated surfaces
- Cure without primer, even on inactive surfaces such as stainless steel
Semisolid & Tape Products
Versatility and Cleanliness
LOCTITE® 248™ Medium Strength Stick and LOCTITE® 268™ High Strength Stick
No mess, easy to apply and pocket-friendly. Ideal for overhead and pre-dispensed applications. Upgraded formula to provide enhanced performance properties, just like the advanced LOCTITE® 243™ and 263™ products:
- Improved cure performance on oil-contaminated surfaces
- Cure without primer, even on inactive surfaces such as stainless steel
LOCTITE® QuickTape® 249™ Threadlocking Tape
The first threadlocker in a convenient, tape form. Easy to use with no mess and no waste, LOCTITE® QuickTape® 249™ provides the same reliable performance as traditional LOCTITE® medium-strength threadlocking liquids and sticks. It can even be pre-applied for future assemblies. It’s a MUST HAVE for every toolbox!
High Temperature Products
Performance and Convenience
LOCTITE® 2422™ Threadlocker, High Temp., Medium Strength and LOCTITE® 2620™ Threadlocker, High Temp., High Strength
New paste formula does not run or migrate, and withstands continuous exposure to temperatures up to 650ºF (340°C). These products are conveniently packaged in syringes for easy dispensing. Disassembling LOCTITE® 2620™ Threadlocker, High Temp., High Strength requires heating to above 650°F (340°C) and disassembling while hot.
Large Fastener Product
High Lubricity and High Strength
LOCTITE® 2047™ Threadlocker, High Lubricity and High Strength
Designed for applications on fasteners over 7 /8" (22 mm) in diameter, this threadlocker and its formula with increased lubricity allow proper clamp load to be achieved by reducing friction. In addition, its high strength property will ensure that clamp load is maintained when exposed to vibration. Standard threadlockers may not have sufficient lubricity on large fasteners to achieve ultimate clamp load.