Technical Data Sheet
LOCTITE
®
7471™
February-2008
PRODUCT DESCRIPTION
LOCTITE
®
7471™ provides the following product
characteristics:
Technology
Activator for LOCTITE
®
anaerobic
adhesives and sealants
Chemical Type Amine and Thiazole
Solvent Acetone and Isopropanol
Appearance Transparent, yellow to amber liquid
LMS
Viscosity Very low
Cure Not applicable
Application Cure acceleration of
LOCTITE
®
anaerobic products
LOCTITE
®
7471™ is used where increased cure speed of
LOCTITE
®
anaerobic products is required. It is especially
recommended for applications with passive metals or inert
surfaces and with large bond gaps. LOCTITE
®
7471™ is
particularly recommended when prevailing temperature is low
(<15 °C).
TYPICAL PROPERTIES
Specific Gravity @ 25 °C 0.79
Viscosity @ 20 °C, mPa·s (cP) 2
Drying Time @ 20 °C, seconds 30 to 70
On Part Life, days ≤7
Infrared Spectrum To match standard
LMS
Flash Point - See MSDS
TYPICAL PERFORMANCE
Fixture time and cure speed achieved as a result of using
LOCTITE
®
7471™ depend on the adhesive used and the
substrate bonded.
Fixture Time, ISO 4587, minutes:
Zinc dichromate using LOCTITE
®
640™,
two side activation
≤25
(Fixture time is defined as the time to develop a shear
strength of 0.1 N/mm²)
TYPICAL PERFORMANCE OF CURED MATERIAL
Adhesive Properties
After 5 minutes @ 25 °C
Compressive Shear Strength, ISO 10123:
Steel pins and collars (degreased),
using LOCTITE
®
640™
N/mm² ≥4.5
LMS
(psi) (≥2,935)
Handling precautions
Activator must be handled in a manner applicable to highly
flammable materials and in compliance with relevant local
regulations.
The solvent can affect certain plastics or coatings. It is
recommended to check all surfaces for compatibility before
use.
GENERAL INFORMATION
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
materials.
For safe handling information on this product, consult the
Material Safety Data Sheet (MSDS).
Under no circumstances should activator and adhesive be
mixed directly as liquids.
Use only in a well ventilated area
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.
Directions for use
1. Spray or brush on the activator on both mating surfaces to
be bonded. For small gaps, treatment of only one surface
may be adequate. Contaminated surfaces may need
repeated treatment or special degreasing prior to
activation to remove any dissolvable contamination.
Porous surfaces may need two treatments of activator.
2. Allow the solvent time to evaporate under good ventilation
until the surfaces are completely dry.
3. After activation, parts should be bonded within 7- days.
Contamination of the surface before bonding should be
prevented.
4. Apply the Loctite Anaerobic product to one or both
surfaces and assemble parts immediately.
5. Where possible, move surfaces in relation to each other
for a few seconds on assembly to properly distribute the
adhesive and for maximum activation..
6. Secure the assembly and await fixturing before any
further handling..
Loctite Material Specification
LMS
LMS dated September-01, 1995. 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.
33 Springdale Ave. Canton, MA 02021
(3 pages)
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