LOCTITE® 242® 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. Suitable for applications on less active substrates such as plated surfaces, where disassembly with hand tools is required for servicing. The thixotropic nature of LOCTITE® 242
APPLICATION
Threadlocking
|
Technology |
Acrylic |
|
Chemical Type |
Dimethacrylate ester |
|
Appearance (uncured) |
Blue liquid |
|
Fluorescence |
Positive under UV light |
|
Components |
One component – requires no mixing |
|
Viscosity |
Medium, thixotropic |
|
Cure |
Anaerobic |
|
Secondary Cure |
Activator |
|
Application |
Threadlocking |
|
Strength |
Medium |
TYPICAL PROPERTIES OF UNCURED MATERIAL
| Specific Gravity @ 25 °C |
1.1 |
| Flash Point – See SDS | |
|
Viscosity @ 25°C, mPa·s (cP): Spindle 3, speed 2 rpm, Helipath Spindle 3, speed 20 rpm, Helipath |
≥5,000 800 to 1,600 |
|
Viscosity, Brookfield – RVT,25°C,mPa·s (cP): Spindle 3, speed 20 rpm |
900 to 1,400 |
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties:
|
Coefficient of Thermal Expansion, ISO 11359-2, K-1 |
100×10-6 |
|
Coefficient of Thermal Conductivity, ISO 8302, W/(m·K) |
0.1 |
| Specific Heat, kJ.kg-1 K-1 | 0.3 |
TYPICAL PERFORMANCE OF CURED MATERIALS
Adhesive Properties
After 1 hour @ 22°C
|
Breakaway Torque, ISO 10964: 3/8 x 16 steel nuts (grade 2) and bolts (grade 5) |
N·m 5.6 to 17 (lb.in) (50 to 150) |
|
Prevail Torque, ISO 10964: 3/8 x 16 steel nuts (grade 2) and bolts (grade 5) |
N·m 1.7 to 6.8 (lb.in) (15 to 60) |
|
N·m: 3/8 x 16 steel GR 2 nuts & GR 5 bolts 3/8 x 16 cadmium nuts & bolts 3/8 x 16 zinc nuts & bolts 3/8 x 16 steel GR 2 nuts & GR 5 bolts 3/8 x 16 cadmium nuts & bolts 3/8 x 16 zinc nuts & bolts |
5.6 to 16.9LMS 2.3 to 22.6LMS 2.3 to 22.6LMS 11.3 to 22.6LMS 3.4 to 22.6LMS 3.4 to 22.6LMS |
|
Static Shear Strength, MIL-R-46082, Mpa: Steel pins and collars |
10 |
After 24 hours @ 22 °C
Breakaway Torque, ISO 10964:
|
3/8 x 16 steel nuts (grade 2) and bolts (grade 5)
|
N·m (lb.in) |
7.9 to 17 (70 to 150) |
|
3/8 x 16 cadmium nuts and bolts |
N·m (lb.in) |
1.1 to 6.8 (10 to 60) |
|
3/8 x 16 zinc nuts and bolts |
N·m (lb.in) |
2.3 to 6.8 (20 to 60) |
|
M10 black oxide steel nuts and bolts |
N·m (lb.in) |
*8 to 19 (71 to 168) |
