The Ultimate Loctite Guide: When & Where to use it

Today in the shop we are looking at threadlock. Dave will be reviewing the different colors and the holding strength that each posses and identify examples of where to use each on your muscle car, truck or daily driver.
🔩 *Welcome to First Place Auto Parts!* Today, we're diving into the world of threadlock products and understanding which color and strength are suitable for your automotive projects.

🧐 *Understanding Threadlock Colors:*
Threadlock is an anaerobic adhesive crucial for preventing bolts from loosening due to factors like heat and vibration. The primary threadlock colors are red, blue, green, and orange.

1. *Red Threadlock:*
*Strength:* High
*Use:* Heavy-duty or high-vibration applications.
*Removability:* Requires heat and special tools for disassembly.
*Applications:* Cylinder block bolts, ring gear bolts, transmission stud bolts.

2. *Blue Threadlock:*
*Strength:* Medium
*Use:* Prevents loosening due to vibration.
*Removability:* Bolts can be removed with hand tools.
*Applications:* Driveshaft U-joint bolts, various mounting bolts.

3. *Orange Threadlock:*
*Strength:* Hybrid formula, similar to red strength with blue's removability.
*Use:* For bolts that need strength but future removal.
*Applications:* Flywheel bolts, transmission mounting bolts, case half bolts.

4. *Green Threadlock:*
*Strength:* Light duty, penetrating grade.
*Use:* Applied after assembly, penetrates gaps in assembled parts.
*Applications:* Number 2 to half-inch bolts.

🚨 *Important Note:*
Remember, the color of the threadlock refers to the product inside, not the bottle's color. Packaging can be deceiving, so always check the label.

🛠️ *Choosing the Right Threadlock:*
*Red for Permanent Joints:* For heavy-duty applications where bolts need to stay in place semi-permanently.
*Blue for Medium Strength:* Ideal for parts that may need to be disassembled in the future.
*Orange for Strength and Removability:* A hybrid for bolts that require strength but future removal.
*Green for Light Duty and Post-Assembly:* Use it after assembly for a penetrating effect.

👍 *Conclusion:*
Understanding the strengths and applications of each threadlock color ensures you choose the right one for your specific project, maintaining the integrity of your automotive assemblies.

🚗 *Explore More:*
For a wide range of restoration and performance parts, visit our First Place Auto Parts website at [fpautoparts.com](https://www.fpautoparts.com). Follow us on Facebook and YouTube for more informative videos and updates.

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