Quick Tip: Basics of Using a Torque Wrench

Published on July 13, 2022
Duration: 5:05

This quick tip from Brownells explains the basics of using torque wrenches for firearms applications. It differentiates between inch-pounds and foot-pounds, demonstrates how to set and use both small and large wrenches, and discusses the importance of maintaining a 90-degree angle for accuracy, particularly with components like AR-15 barrel nuts. The video also advises on proper torque wrench maintenance to ensure longevity and accuracy.

Quick Summary

Learn to use torque wrenches for firearms by understanding inch-pounds vs. foot-pounds and proper technique. For small wrenches, attach the bit, set torque, and turn until it clicks. For larger wrenches, maintain a 90-degree angle for accuracy, especially on components like AR-15 barrel nuts. Always relieve tension after use to preserve the wrench's accuracy.

Chapters

  1. 00:04Introduction to Torque Wrenches
  2. 00:19Inch Pounds vs. Foot Pounds
  3. 00:50Using Small Torque Wrenches
  4. 01:18Using Large Torque Wrenches
  5. 01:3190-Degree Angle for Accuracy
  6. 02:13Torque Wrench Calculations
  7. 02:48Setting Torque on Large Wrenches
  8. 03:11Torque Wrench Maintenance Debate
  9. 03:36Relieving Tension on Torque Wrenches
  10. 04:20Key Takeaways

Frequently Asked Questions

What are the main types of torque measurements used for firearms?

The two main types of torque measurements are inch-pounds and foot-pounds. Smaller torque wrenches typically measure in inch-pounds, while larger ones measure in foot-pounds. It's crucial not to mix these up, as 12 inch-pounds equal 1 foot-pound, and incorrect usage can damage components.

How do I properly use a small torque wrench for firearm parts?

For small torque wrenches, attach the correct MagnaTip bit for the fastener. Rotate the bottom of the wrench to set the manufacturer's recommended torque value. Then, apply force until the wrench clicks, indicating the desired torque has been achieved.

Does the angle of the torque wrench matter when working on firearms?

Yes, for maximum accuracy, the adapter should be kept at a 90-degree angle to the main shaft of the torque wrench. While minor deviations might not significantly affect torque on components with wide ranges like AR-15 barrel nuts, 90 degrees ensures the truest reading.

What is the best practice for maintaining a torque wrench?

To maintain accuracy and prolong the life of a torque wrench, it's recommended to relieve the internal spring tension after use. Set the wrench to its lowest torque setting rather than leaving it at a specific tension, as springs wear out from use, not necessarily compression.

Related News

All News →

More Gunsmithing & DIY Videos You Might Like

More from Brownells, Inc.

View all →