Data Sheet

Technical Data Sheet
LOCTITE
®
274™
February-2008
PRODUCT DESCRIPTION
LOCTITE
®
274™ provides the following product
characteristics:
Technology Acrylic
Chemical Type Dimethacrylate ester
Appearance (uncured) Blue liquid
LMS
Fluorescence Positive under UV light
LMS
Components One component -
requires no mixing
Viscosity Low
Cure Anaerobic
Application Threadlocking
Strength Medium
LOCTITE
®
274™ 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.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C 1.07
Flash Point - See SDS
Viscosity, Brookfield - RVT, 25 °C, mPa·s (cP):
Spindle 1, speed 50 rpm 80 to 150
LMS
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.
% of Full Strength on Steel
Cure Time
100
75
50
25
0
1min 5min10min 30min 1h 3h 6h 12h 24h 48h
Brass
Steel
Stainless steel
Zinc dichromate
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. Gaps in
threaded fasteners depend on thread type, quality and size.
The following graph shows the shear strength developed with
time on steel pins and collars at different controlled gaps and
tested according to ISO 10123.
% of Full Strength on Steel
Cure Time
100
75
50
25
0
1min 5min10min 30min 1h 3h 6h 12h 24h 48h
0.05 mm
0.15 mm
0.25 mm
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 black oxide bolts and steel nuts
and tested according to ISO 10964.
% of Full Strength on Steel
Cure Time
100
75
50
25
0
1min 5min10min 30min 1h 3h 6h 12h 24h 48h
40 °C
22 °C
5 °C
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 zinc dichromate M10 steel nuts and
bolts using Activator 7471™ or 7649™ and tested according to
ISO 10964.