LOCTITE® 243
LOCTITE® 243 is a blue general-purpose threadlocker that locks and seals metal nuts and bolts to prevent loosening caused by shock and vibration. The medium-strength formulation is removable with ordinary hand tools, supporting assemblies that may need to be serviced or maintained.
The product works on all metals without primer, including passive substrates such as stainless steel, aluminum and plated surfaces. It is also suitable for use on most as-received fasteners without aggressive cleaning, curing through most corrosion prevention oils and cutting fluids.
Specifications:
| Technology | Acrylates, anaerobic cure |
| Application method | Dispense gun; dispense system; manual |
| Application temperature | -55.0 deg C to 180.0 deg C (-65.0 deg F to 360.0 deg F) |
| Application | Threadlocking |
| Color | Blue |
| Fixture time | 10.0 min |
| Breakaway torque, M10 steel nuts/bolts | ~26.0 N.m (~230.0 in./lb.) |
| Prevail torque, M10 steel nuts/bolts | 5.0 N.m (40.0 in./lb.) |
| Viscosity, Speed 20 RPM | 2150.0 mPa.s (cP) |
| Recommended for use with | Metal; passive metal |
| Key characteristics | Medium strength; primerless; oil tolerant; removable; thixotropic; fluorescent |





