Invented by Loctite Corporation, now Henkel Corporation, as a revolutionary method to lock and seal threaded fasteners, Loctite® liquid threadlockers have found wide acceptance in a range of applications – from delicate electronic components to heavy construction equipment. Loctite® threadlockers are available in varying viscosities and strengths for virtually any application, including exposure to extreme environments.  Patented, revolutionary QuickStix™ semi-solid formulas offer added convenience and portability.

LOW STRENGTH

Loctite 222MS™  Threadlocker

Low Strength/Small Screw/Purple
Ideal for fastener diameters of ¼” (6 mm) and smaller, long engagement length fasteners, and components requiring occasional adjustment.   Apply to threaded parts before assembly.  Controlled lubricity for accurate clamp loads.  Parts can be disassembled with hand tools.  Approved for use in or around food processing areas.

REMOVABLE STRENGTH

Loctite 242®  Threadlocker

Medium Strength
Removable strength, general purpose threadlocker adhesive well suited for fasteners between ¼” to ¾” diameter (6 to 20 mm).  Applied to threaded components before assembly, Loctite® 242® Threadlocker has controlled lubricity for accurate clamp loads.  Parts can be separated using hand tools.  Approved for use in or around food processing areas.

Loctite 243™  Threadlocker

Medium Strength/Oil Resistant
A general purpose, medium strength threadlocker with improved oil tolerance.  Suitable for ¼”  to ¾” diameter (6 to 20 mm) fasteners.

Loctite 246™  Threadlocker

Loctite Quickstix™ 248™ Threadlocker

Medium Strength/Semi-Solid/Blue
New, patented semi-solid stick formula offers added convenience and portability. Like Loctite® 242®, this threadlocker stick is well suited for  ¼”  to ¾” diameter (6 to 20 mm) fasteners and is removable with hand tools.  The semi-solid formula also means it won’t spill or leak.

Loctite 2432™ Threadlocker

Medium Strength/Low Halogen/Low Sulfur
This medium strength threadlocker was especially developed for use on sensitive metals, like titanium, used in the Nuclear Industry.  Parts can be separated using hand tools.

Loctite 2440™ Threadlocker

Primerless/Meduim Strength
This threadlocker is particularly fast curing, eliminating the need for primers.  Performs well on all substrates.  It develops usable strength within one hour.  Parts can be separated using hand tools.

HIGH STRENGTH

Loctite 262™ Threadlocker

Medium Strength to High Strength
A permanent, high strength product that is applied to fasteners up to ¾” (20 mm) in diameter before assembly.  High lubrication for easy assembly.  Excellent for preventing rust and corrosion in extreme chemical/environmental conditions. Localized heat and hand tools are required to separate parts.  Solvents will not weaken the adhesives bond.  Approved for use in or around food processing areas.

Loctite 266™ Threadlocker

High Strength/High Temperature
Fast fixturing threadlocker resists oil and mild surface contamination at temperatures to 450°F.  Locks fasteners up to ¾” (20 mm) in diameter.

 Loctite Quickstix™ 268™ Threadlocker

High Strength/Semi-Solid/Red
Revolutionary semi-solid stick formula is high strength and best suited for fasteners up to ¾” (20 mm). Semi- solid formula offers added convenience and portability.  Localized heat and hand tools are required to separate parts.

Loctite 271™ Threadlocker

High Strength
A high strength, low viscosity threadlocker for fasteners up to 1” (20 mm) inn diameter.

Loctite 272™ Threadlocker

High Strength/High Temperature
Withstands temperatures to 450°F.  Provides a fast cure on most surfaces, including “as received” fasteners.  Recommends for bolts up to  1½” (36 mm) in diameter. Heat and hand tools are required for disassembly.

Loctite 277™ Threadlocker

High Strength
Locks fasteners up to  1½” (36 mm). Protects threads from rust and corrosion.  Removable with heat and hand tools.

Loctite 2760™ Threadlocker

Primerless/High Strength
This threadlocker is particularly fast curing, eliminating the need for primers.  It develops usable strength within one hour.  Particularly suitable for heavy duty applications where resistance to heavy shock, vibration and stress levels is required. 

WICKING

Loctite 220™ Threadlocker

Medium Strength/Blue
A low viscosity threadlocking adhesive that allows the product to wick along the threads of preassembled fasteners. Perfect for fasteners up to  ¼” diameter (6 mm).

Loctite 290™ Threadlocker

Medium Strength/Green
A low viscosity, medium strength threadlocker for pre-assembled bolts up to ½” (12 mm) to secure them in place.  Penetrates threads by capillary action.  Seals porosities in welds and metal parts.  Secures set screws and other assemblies after setting are completed.  Seals welds and porous metal parts.  Protects threads from rust and corrosion.  Localized heating and hand tools are needed for disassembly.

Loctite 294™ Threadlocker

Wicking Grade/High Temperature
Ideally suited for pre-assembled fasteners.  Performs well on oily fasteners.

PLASTIC

Loctite 425™ Assure™ Instant Adhesive

Surface Curing Threadlocker
Low strength, fast curing threadlocker for plastic fasteners. Can be used as a tamper-proofing agent for the head of screws.  Can be applied before or after assembly.

GEL

Loctite Tight® Multi-Purpose Anaerobic Gel

This products seals, locks, and retains.  It seals against most liquids and gases and works well on coarse threads, large gaps, and all overhead applications.

PRIMER

Loctite 7649™ Primer N™

Decreases the set-up time of Loctite®  threadlockers and increases breakaway torque on most fastener surfaces.  Allows application of threadlockers in cold weather.  Contains no ozone-depleting compounds.