Loctite 290 Wicking Grade Threadlocker Instruction Manual

1. Product Overview

The Loctite 290 Wicking Grade Threadlocker is a medium-strength anaerobic adhesive designed for locking and sealing pre-assembled fasteners. Its low viscosity allows it to penetrate threads by capillary action without disassembling the parts. This product is suitable for securing set screws, adjusting screws, and other assemblies after settings are completed, as well as sealing porosities in welds and metal parts.

It is a green-colored liquid, available in a 50 mL (1.69 fl. oz.) container.

Figure 1: Loctite 290 Wicking Grade Threadlocker. This image displays the Loctite 290 Wicking Grade Threadlocker in its red bottle with a white cap. The label clearly indicates 'LOCTITE 290 THREADLOCKER WICKING GRADE' and 'PART NO. 29031', along with the net volume of 1.69 fl. oz. (50 ml). A caution statement regarding allergic skin reaction and eye irritation is also visible.

2. Safety Information

CAUTION: MAY CAUSE ALLERGIC SKIN REACTION. EYE IRRITANT. Read back panel for complete safety instructions before use.

• Avoid contact with skin and eyes. In case of contact, rinse immediately with plenty of water and seek medical advice.
• Use in a well-ventilated area.
• Keep out of reach of children.
• Store in a cool, dry place away from direct sunlight.

3. Setup and Preparation

1. Clean Surfaces: Ensure all surfaces to be treated are clean, dry, and free from oil, grease, and other contaminants. For best results, use a suitable cleaning solvent.
2. Part Assembly: This product is designed for pre-assembled fasteners. Assemble the components to their final position before applying the threadlocker.
3. Shake Bottle: Shake the Loctite 290 bottle thoroughly before use to ensure proper mixing of components.

4. Operating Instructions (Application)

Loctite 290 is a wicking grade threadlocker, meaning it is applied after assembly.

1. Identify Application Area: Locate the junction between the nut and bolt, or the area where the threadlocker needs to penetrate.
2. Apply Product: Carefully apply a sufficient amount of Loctite 290 around the circumference of the engaged threads. The product will wick into the threads by capillary action.
3. Allow to Cure: Allow adequate time for the product to cure. Fixture time is typically within 10 minutes, with full cure achieved in 24 hours. Cure speed can vary based on substrate material and temperature.
4. Verify Security: After full cure, verify the assembly is securely locked.

Typical Applications:

• Securing set screws and other assemblies after settings are completed.
• Sealing porosities in welds and metal parts.
• Instrumentation screws.
• Electrical connectors.

5. Maintenance and Storage

• Storage: Store the product in its original container in a cool, dry location between 8°C to 28°C (46°F to 82°F). Do not return unused product to the original container as contamination may reduce shelf life.
• Container Care: Keep the container tightly closed when not in use to prevent contamination and premature curing.
• Shelf Life: Refer to the product packaging for specific shelf life information.

6. Troubleshooting

• Product Not Curing: Ensure surfaces are clean and active metal (e.g., steel, brass) is present. Anaerobic adhesives cure in the absence of air and in contact with metal. If using on inactive metals (e.g., aluminum, stainless steel), a Loctite primer/activator may be required to speed up the cure.
• Weak Bond: Insufficient product application or improper surface preparation can lead to a weak bond. Re-clean surfaces and apply a sufficient amount of threadlocker.
• Removal: For removal of cured Loctite 290, localized heat (e.g., 250°C / 482°F) may be required to soften the adhesive before disassembling with standard hand tools.

7. Specifications

8. Warranty and Support

For specific warranty information and technical support regarding your Loctite 290 Wicking Grade Threadlocker, please refer to the official Loctite website or contact Loctite customer service directly. This manual does not contain specific warranty details.

You can visit the Loctite store for more information: Loctite Official Store