Loctite 2400 anaerobic medium-strength blue threadlocker for fasteners requiring normal disassembly with hand tools; thixotropic, fluoresces under UV, and is formulated with reduced-hazard labelling compared with 243.
| Technology acrylic; chemical type dimethacrylate ester; blue, thixotropic medium-viscosity liquid (uncured), positive fluorescence under UV light. One component, requires no mixing; anaerobic cure with activator secondary cure. Specific gravity 1.1 @ 23 degC; viscosity by Brookfield RVT (25 degC) and Cone & Plate (shear rate 129 s-1). Breakaway, prevailing and breakloose torque tested per ISO 10964 (M10 steel/zinc nuts and bolts); compressive shear strength per ISO 10123. Cure can be accelerated on less active substrates with Activator SF 7471 or SF 7649. Particularly suited to stainless steel and coated (zinc-flake / zinc-plated) fasteners where disassembly with hand tools is required for servicing. Not for pure-oxygen / oxygen-rich systems or strong oxidisers. Operating temperature -55 to +150 degC. 50 ml bottle. | |
| Type | Threadlocker |
| Strength | Medium |
| Color | Blue |
| Fill size | 50 ml |
| Operating temperature | -55 to +150 °C |
| Specific gravity | 1.1 at 23 °C |
| Chemical base | dimethacrylate ester |
| Cure | Anaerobic (one-component) |
| Standards | ISO 10964, ISO 10123 |
| Temperature range | -55 to +150 degC |
| MOQ | 1 |
Reduced-hazard, medium-strength alternative to 243 for the same medium-strength threadlocking duty; suited to stainless and coated fasteners.