Apr 11, 2023
The Story Behind Prevailing Torque Locknuts
Scroll through the story of Security Locknut below. A MILITARY PRODUCT How It All Began In December 1915,…
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Mar 8, 2022
CMM Inspection for Prevailing Torque Locknuts
Security Locknut uses a coordinate-measuring machine (CMM) to monitor manufacturing consistency and quality. Check out the video below…
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May 27, 2021
Does an Impact Wrench Properly Tighten Your Bolted Joint? (Hint: Probably Not.)
Here’s a recent field test showing the installing of a 2”x 4.5 nut that highlights the issue. Left:…
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Apr 27, 2021
Tension Testing: The Effect of Lubrication on K Factor
Surprise results testing bolt tension with different lubricants. Test Setup Bolt and Nut Used for the Tests Predicted…
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Mar 4, 2021
What’s the Deal with Castle Nuts?
Castellated nuts, often called a castle nuts, employ cotter pins as a locking mechanism. We will walk through…
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Feb 16, 2021
Double Nuts/Nutting: Does This Work?
Let’s compare a typical assembly using one nut and a bolt against the use of double nuts. Single…
Read more →Jan 14, 2021
How Does the Security Locknut Work?
Last time, we discussed why you may not need a locknut if the joint is properly designed and…
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Dec 9, 2020
Why You Shouldn’t Need a Prevailing Torque Locknut
You shouldn’t need a locknut if the bolted joint is properly designed and assembled. This means it’s designed…
Read more →Oct 15, 2020
Torque-Tension Testing
The relationship between input torque and tension is the governing principle behind a well-designed bolted joint. Often, calculated…
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Sep 15, 2020
Why is it Important to Keep a Bolted Joint Tight?
It is well understood that a fastener will fail if it is loaded above its capacity, as shown…
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