Threadlocker 101

Published on December 18, 2017
Duration: 12:40

This guide, presented by Dave Timm, details the proper application of threadlockers to firearm components. It covers degreasing, selecting the correct threadlocker strength (low, medium, high-heat), and applying it to screws for parts like bolt catches, optic mounts, and gas blocks. Proper torque and curing times are emphasized for reliable component retention.

Quick Summary

Properly applying threadlocker to firearm components involves degreasing threads with denatured alcohol, selecting the correct strength (low, medium, or high-heat), applying it to the fastener, and allowing it to cure for 24 hours. High-heat threadlocker is crucial for gas blocks, while medium-strength is suitable for optic mounts.

Chapters

  1. 00:21Introduction to Threadlocker Importance
  2. 00:58Types of Threadlocker Overview
  3. 01:21General Color Coding
  4. 01:47Medium Strength Threadlockers (Blue)
  5. 02:25Permatex Gel (Medium Strength)
  6. 03:02High Strength Threadlockers (Red)
  7. 03:38Low Strength and Other Adhesives
  8. 04:42Industrial Strength Adhesive (Rocksett)
  9. 05:49Safety and Degreasing Hardware
  10. 06:49Degreasing Small Threads and Screws
  11. 07:23Applying Low Strength Threadlocker
  12. 08:36Applying Medium Strength Threadlocker
  13. 09:22Applying High Heat Threadlocker
  14. 11:21Other Applications and Conclusion
  15. 12:08Promotional Message

Frequently Asked Questions

What are the main types of threadlocker and their general uses?

Threadlockers come in low (purple), medium (blue), and high-strength (red) varieties. Low-strength is for small screws, medium-strength is for general assembly, and high-strength is for permanent bonding, often requiring heat for removal. Wicking types are for existing threads, and retaining compounds bond cylindrical parts.

How do you properly prepare firearm components for threadlocker application?

First, ensure the firearm is unloaded. Then, thoroughly degrease the threads of both the component and the fastener using denatured alcohol. Cleaning removes oils and contaminants, ensuring the threadlocker can form a strong, reliable bond.

Which threadlocker is best for gas block set screws on an AR-15?

For gas block set screws, a high-heat resistant threadlocker, such as Permatex Gel Twist High Strength Red, is recommended. This prevents the screws from loosening due to the heat generated by the barrel during firing.

Can blue threadlocker be removed without heat?

Yes, medium-strength blue threadlockers, like Loctite 242 or 243, are designed to be removable with standard hand tools without the need for heat. This makes them ideal for components that may require periodic maintenance or adjustment.

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