Quick Tip: How to properly use Loctite.

Published on October 6, 2016
Duration: 2:16

This guide, presented by a Brownells Gunsmith, details the proper application of Loctite 242 for securing firearm components like scope mounts. It emphasizes the critical step of degreasing threads to ensure proper bonding and advises on adjusting torque settings due to Loctite's lubricating properties. Proper thread preparation and application are key to preventing component loosening.

Quick Summary

Properly using Loctite on firearm components like scope screws involves thoroughly degreasing threads with cleaners like alcohol or brake cleaner to ensure a strong bond. Blue Loctite 242 is recommended as a removable threadlocker. Crucially, reduce your torque wrench setting by approximately 2 inch-pounds when applying Loctite, as it acts as a lubricant when wet, preventing over-tightening.

Chapters

  1. 00:00Introduction to Loctite for Scope Mounting
  2. 00:21Degreasing Action Threads
  3. 00:37Preparing Screws and Application
  4. 01:21Torque Adjustments with Loctite
  5. 01:45Scope Rings and Support

Frequently Asked Questions

What is the primary purpose of using Loctite on firearm scope screws?

Loctite on scope screws prevents them from loosening due to vibration or recoil, ensuring that your optic maintains its zero and accuracy over time. It's a crucial step for reliable scope mounting.

Why is it important to degrease firearm threads before applying Loctite?

Degreasing removes oil and contaminants that prevent Loctite from properly bonding to the threads. Without clean threads, the Loctite will not cure effectively, compromising its holding power and potentially leading to component failure.

How does Loctite affect torque readings on firearm screws?

Loctite acts as a lubricant when it's wet. This means you'll achieve a higher clamping force than indicated by your torque wrench if you don't adjust the setting. It's recommended to reduce the target torque by about 2 inch-pounds.

What type of Loctite is recommended for scope mounting, and is it permanent?

Blue Loctite, such as Loctite 242, is recommended for scope mounting. It is a removable threadlocker, meaning components can be disassembled with standard tools after the Loctite has cured, which is ideal for maintenance or adjustments.

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