LOCTITE® 243 Blue Medium Strength Threadlocker
Features and Benefits
Available sizes:
This iconic threadlocker locks and seals metal nuts and bolts to prevent loosening due to shock and vibration. Medium strength: removable with hand tools.
LOCTITE® 243 is a blue, general purpose threadlocker that provides a medium-strength bond. It works on all metals without primer, including passive substrates such as stainless steel, aluminium, and plated surfaces. Suitable for use on most oil-coated, 'as-received' fasteners without cleaning.
- Prevents loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
- Works on all metals, including passive substrates (e.g. stainless steel, aluminium, plated surfaces)
- Proven to tolerate minor contamination by industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids
- Permits disassembly with hand tools for servicing
- P1 NSF Reg. No.: 123000
Documents and Downloads
Safety Data Sheets and RoHs
- Bottle 10.0/case - IDH 1335868
- Bottle 12.0/case - IDH 1335884
- Bag in Box 1.0/case - IDH 1335904
- Bottle 12.0/case - IDH 1918246
LOCTITE® 243, 250 ml Bottle 1335868 en-NG
IDH:
1335868
EAN:
5010266000800
Size Case: Bottle
Quantity: 10.0/case
LOCTITE® 243, 2 l Bag in Box 1335904 en-NG
IDH:
1335904
EAN:
5010266000848
Size Case: Bag in Box
Quantity: 1.0/case
LOCTITE® 243, 10 ml Bottle 1918246 en-NG
IDH:
1918246
EAN:
5010266009100
Size Case: Bottle
Quantity: 12.0/case
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Additional Documents
Technical Information
| Application method | Dispense gun, Dispense system, Manual |
| Application temperature | -55.0 - 180.0 °C (-65.0 - 360.0 °F ) |
| Applications | Threadlocking |
| Breakaway torque, M10 Steel Nuts/Bolts | ~26.0 N·m (230.0 in./lb. ) |
| Colour | Blue |
| Cure type | Anaerobic cure |
| Fixture time | 10.0 min. |
| Key characteristics | Disassembly: removable, Fluorescent, General purpose, Oil tolerant, Primerless, Strength: medium strength, Thixotropic |
| Physical form | Liquid |
| Prevail torque, M10 Steel Nuts/Bolts | 5.0 N·m (40.0 in./lb. ) |
| Recommended for use with | Metal, Metal: passive metal |
| Specific gravity, @ 23.0 °C | 1.08 |
| Viscosity, Speed 20 RPM | 2150.0 mPa·s (cP) |
How to
Step by Step Guide
1. Preparation - Cleaning
It is recommended to use LOCTITE® SF 7063/7064 to degrease and clean surfaces prior to applying adhesive.
2. Preparation - Activation
If cure speed is too slow due to passive metals (stainless steel, aluminium and plated metals) or low temperature (below 5°C), use activator LOCTITE® SF 7240 or LOCTITE® SF 7649 (see cure speed vs activator graph in the TDS).
3. Application
Apply liquid threadlocker to the engagement area. For manual dispensing, the use of a peristaltic handgun or the LOCTITE® Pro Pump is recommended to ensure a consistent application volume.
4. Application - Through Hole
Insert bolt and apply threadlocker to the exposed thread. Assemble nut and tighten to the correct/specified torque.
5. Application - Blind Hole
Apply into lower third of blind hole.
6. Assembly
Assemble and tighten. If several bolts are being assembled, torque them down to the correct value within the fixture.
7. Disassembly - Hand Tools
Disassemble with standard hand tools.
Hint
For the disassembly of corroded or seized parts use LOCTITE® LB 8040 Freeze and Release.
Frequently Asked Questions
What products can I use to prevent vibration loosening of parts? / How do I prevent vibration loosening and leak paths?
What temperatures can threadlockers / thread sealants / gasketing materials work up to?
Are threadlockers / sealants / gasketing materials resistant to fluids such as petrol, diesel, engine oil, water, glycol, acids, alkalis, hydraulic fluid, etc.?
Can threadlockers be used as thread sealants? / Can thread sealants be used as threadlockers?
Which products are food / drinking water approved?
Which thread sealants can be used on oxygen systems?
What health and safety (H&S) precautions do I need to take with product LOCTITE 243?
LOCTITE® 243
This iconic threadlocker locks and seals metal nuts and bolts to prevent loosening due to shock and vibration. Medium strength: removable with hand tools.