Loctite 274 - 50 ml, medium strength
Blue medium-strength anaerobic thread locker with low viscosity designed for joints up to size M20. Prevents spontaneous loosening due to vibrations and allows disassembly with common hand tools.
Loctite 274 - 50 ml, medium strength
Description
Description
Loctite 274 is a single-component anaerobic thread locker based on dimethacrylate ester with low viscosity and medium strength. This acrylic product is specially designed for securing and sealing threaded fasteners that require disassembly with common hand tools at room temperature. The product cures without access to air (anaerobically) in the gap between closely fitting metal surfaces and prevents loosening or leaking of joints caused by vibrations, shocks, and thermal stress.
Composition and functional properties:
- Chemical base: Dimethacrylate ester
- Viscosity: Low viscosity (80 to 150 mPa·s) allowing easy penetration into threads.
- Strength class: Medium – allows disassembly without damaging the material.
- Fluorescence: Positive under UV light (allows for product presence verification).
- Tixotropy: No (low viscosity for high penetration capability).
| Parameter | Value |
|---|---|
| Technology | Acrylic |
| Appearance | Blue liquid |
| Maximum thread size | M20 |
| Operating temperature | -55 °C to +150 °C |
| Viscosity (Brookfield - RVT, 25°C) | 80 to 150 mPa·s |
| Handling strength on steel | 12 min |
| Handling strength on stainless steel | 70 min |
| Fixation time (LMS) | 30 min |
| Tensile strength (M10 steel) | 8 to 24 Nm |
| Loosening torque (M10 steel) | 15 Nm |
Main advantages / Functional characteristics:
- Resistance to vibrations: Prevents spontaneous loosening of threaded joints in pumps, gearboxes, and presses.
- High chemical resistance: Tested for resistance to motor oil (125 °C), unleaded gasoline, brake fluid, and glycol.
- Quick fixation: Achieves handling strength on steel joints within 12 minutes.
- Single-component system: Eliminates the need for mixing, direct application from the container.
Application area / Examples of use:
- Securing screws: Suitable for all metal threaded joints up to size M20.
- Material compatibility: Optimal for steel and brass; for stainless steel and passivated surfaces, a longer curing time should be expected.
- Industrial use: Assembly of machine components where future maintenance with hand tools is required.
Assembly and maintenance / Application instructions:
- Preparation: Clean surfaces with Loctite SF 7063 or SF 7061 cleaner. At temperatures below 5 °C, use Loctite 7471 or 7649 activator.
- Application: Apply the product to the threaded part of the screw at the location of the future joint. For blind holes, apply drops into the internal thread at the bottom of the hole.
- Disassembly: Perform with common hand tools. In the case of extremely long joints, use local heating to about 250 °C and disassemble while hot.
- Cleaning: Cured material can be removed mechanically (wire brush) or in combination with Loctite SF 7200 sealant remover.
