Loctite 8431 Grade C Low-visc Medium Strength Threadlocker 50ml



Loctite 8431 Grade C Low-visc Medium Strength Threadlocker 50ml

  • Strength : Medium
  • Viscosity : Medium
  • Color : Blue
  • Curing Type : Anaerobic
  • Application : Threadlocking

LOCTITE Grade C  Medium Strength Threadlocker is used to lock and seal fine threaded nuts, bolts and studs in a wide variety of applications, removable with tools.

LOCTITE® GRD CV™ is used to lock and seal fine threaded
nuts, bolts and studs in a wide variety of applications where
removal with hand tools is necessary.

LOCTITE® GRD CV™ is tested to the lot requirements of
Military Specification Mil-S-22473E. Note: This is a regional
approval. Please contact your local Technical Service Center
for more information and clarification.

This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected
with a sealant for chlorine or other strong oxidizing
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
  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

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 August-23, 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.

Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
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.
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