Description
Permabond LM113 is a low-strength anaerobic threadlocker formulated for securing small threaded fasteners that require easy disassembly with standard hand tools. It is ideal for screws, bolts, and hydraulic fittings where vibration resistance is required without permanent locking.
LM113 features a thixotropic, non-drip viscosity that stays in place during application, allowing precise dispensing on small fasteners without run-off. It cures reliably at room temperature on steel, cadmium, zinc, and other plated fasteners, providing consistent clamp load, corrosion protection, and long-term environmental resistance.
Permabond LM113 is commonly specified in military, aerospace, electronics, and industrial applications where controlled off-torque and serviceability are critical.
Key Features and Benefits
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Low-strength threadlocker designed for easy hand-tool removal
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Prevents vibration-induced loosening of small fasteners
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Controlled off-torque for predictable disassembly
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Thixotropic, non-drip formulation for clean application
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Lubricates threads during assembly to reduce galling
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Provides corrosion protection against moisture and chemicals
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Superior environmental resistance
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100 percent solids and solvent free
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Full cure at room temperature
Specifications and Compliance
Each production lot of Permabond LM113 is tested to meet the following military and industry standards:
Military Specification
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MIL-S-46163A Type II Grade M
ASTM Specification
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ASTM D5363 AN 0311 Group 03 Class 1 Grade 1
Typical Applications
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Locking small screws and bolts
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Hydraulic fittings requiring periodic service
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Precision assemblies in electronics and instrumentation
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Fasteners exposed to vibration in pumps, motors, and compressors
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Military, aerospace, and industrial fastening applications
Compatible Substrates
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Carbon steel
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Zinc-plated fasteners
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Cadmium-plated fasteners
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Other common plated metal fasteners
Note: Cure speed may be reduced on passive substrates such as stainless steel or aluminum without the use of an activator.
Technical Specifications
| Property | Value |
|---|---|
| Chemistry | Methacrylate esters |
| Appearance | Purple |
| Viscosity at 25°C | 1,200 mPa·s |
| Specific Gravity | 1.1 |
| Maximum Gap Fill | 0.15 mm (0.006 in) |
| Maximum Thread Size | M20 (3/4 in) |
| Handling Strength | 15 minutes at 23°C |
| Full Cure | 24 hours |
| Break Torque (M10 Steel) | 9 N·m (80 in·lb) |
| Prevail Torque (M10 Steel) | 5 N·m (40 in·lb) |
| Shear Strength | 5 MPa (750 psi) |
| Temperature Range | -55°C to 150°C (-65°F to 300°F) |
Directions for Use
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Ensure fasteners are clean, dry, and free of oil or grease.
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For through holes, apply a continuous bead across the contact length of the threads.
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For blind holes, apply several drops to the bottom of the hole.
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Assemble and torque to the required specification.
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Allow approximately 15 minutes for handling strength and 24 hours for full cure.
To accelerate cure on inactive metals, use Permabond A905 or ASC10 activator.
Why Choose Permabond LM113
Permabond LM113 provides reliable low-strength threadlocking with controlled removability, making it ideal for small fasteners and serviceable assemblies. Its proven compliance with military and ASTM standards ensures dependable performance in critical applications where vibration resistance and easy maintenance are required.
Need Help Selecting the Right Threadlocker
Chemical Concepts carries a full range of Permabond anaerobic adhesives, including low, medium, and high-strength threadlockers. Contact our technical team for help selecting the right product based on fastener size, substrate, and service conditions.
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