Loctite 246 Anaerobic Adhesive Threadlocker Blue-opaque 50ml

Loctite 246 Anaerobic Adhesive Threadlocker Blue/opaque 50ml

• Strength : Medium
• Temperature : -65 - 450 °F
• Viscosity : 2600 mPa.s (cP) Brookfield
• Color : Blue, Opaque
• Curing Type : Anaerobic
• Application : Threadlocking

LOCTITE® 246 is a blue, opaque, thixotropic, dimethacrylate ester acrylic threadlocker. It is particularly suitable for heavy duty applications such as bolts used in transmissions, construction equipment or railroad assemblies where resistance to heavy shock, vibration and stress levels is required along with exposure to elevated temperatures.

• Designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools
• Thixotropic nature reduces the migration of liquid product after application
• Resistant to heavy shock, vibration and stress levels
• Resistant to exposure to elevated temperatures

LOCTITE®
246™ is designed for the locking and sealing of
threaded fasteners which require normal disassembly with
standard hand tools. The product cures when confined in the
absence of air between close fitting metal surfaces and
prevents loosening and leakage from shock and vibration.
Particularly suitable for heavy duty applications such as bolts
used in transmissions, construction equipment or railroad
assemblies where resistance to heavy shock, vibration and
stress level is required along with exposure to elevated
temperatures. The thixotropic nature of LOCTITE®
246™
reduces the migration of liquid product after application to the
substrate.

TYPICAL CURING PERFORMANCE

Cure Speed vs. Substrate

The rate of cure will depend on the substrate used. The graph
below shows the breakaway strength developed with time on
M10 black oxide bolts and steel nuts compared to different
materials and tested according to ISO 10964

Cure Speed vs. Bond Gap

The rate of cure will depend on the bondline gap.Gaps in
threaded fasteners depends on thread type, quality and size
The following graph shows shear strength developed with time
on steel pins and collars at different controlled gaps and tested
according to ISO 10123

Cure Speed vs. Temperature

The rate of cure will depend on the temperature. The graph
below shows the breakaway strength developed with time at
different temperatures on M10 steel nuts and bolts and tested
according to ISO 10964

Cure Speed vs. Activator

Where cure speed is unacceptably long, or large gaps are
present, applying activator to the surface will improve cure
speed. The graph below shows the breakaway strength
developed with time on M10 zinc dichromate steel nuts and
bolts using Activator 7471™ and 7649™ and tested according
to ISO 10964.

GENERAL INFORMATION

This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials.
For safe handling information on this product, consult the
Safety Data Sheet (SDS).
Where aqueous washing systems are used to clean the surfaces
before bonding, it is important to check for compatibility of the washing
solution with the adhesive. In some cases these aqueous washes can
affect the cure and performance of the adhesive.
This product is not normally recommended for use on plastics
(particularly thermoplastic materials where stress cracking of the
plastic could result). Users are recommended to confirm compatibility
of the product with such substrates.

Directions for use:

For Assembly

1. For best results, clean all surfaces (external and internal)
   with a LOCTITE®
   cleaning solvent and allow to dry.
2. If the material is an inactive metal or the cure speed is
   too slow, spray all threads with Activator 7471™ or
   7649™ and allow to dry.
3. Shake the product thoroughly before use.
4. To prevent the product from clogging in the nozzle, do
   not allow the tip to touch metal surfaces during
   application.
5. For Thru Holes, apply several drops of the product onto
   the bolt at the nut engagement area.
6. For Blind Holes, apply several drops of the product
   down the internal threads to the bottom of the hole.
7. For Sealing Applications, apply a 360° bead of product
   to the leading threads of the male fitting, leaving the first
   thread free. Force the material into the threads to
   thouroughly fill the voids. For bigger threads and voids,
   adjust product amount accordingly and apply a 360°
   bead of product on the female threads also.
8. Assemble and tighten as required

For Disassembly

1. Remove with standard hand tools.
2. In rare instances where hand tools do not work because
   of excessive engagement length, apply localized heat to
   nut or bolt to approximately 250 °C. Disassemble while
   hot.

For Cleanup

1. Cured product can be removed with a combination of
   soaking in a Loctite solvent and mechanical abrasion
   such as a wire brush.

Loctite Material Specification

LMS dated January-16, 1999. Test reports for each batch are
available for the indicated properties. LMS test reports include
selected QC test parameters considered appropriate to
specifications for customer use. Additionally, comprehensive
controls are in place to assure product quality and
consistency. Special customer specification requirements may
be coordinated through Henkel Quality.

Storage

Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or
greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
Corporation cannot assume responsibility for product which
has been contaminated or stored under conditions other than
those previously indicated. If additional information is required,
please contact your local Technical Service Center or
Customer Service Representative.