Tension Testing: The Effect of Lubrication on K Factor
Surprise results testing bolt tension with different lubricants. Test Setup Bolt and Nut
What’s the Deal with Castle Nuts?
Castellated nuts, often called a castle nuts, employ cotter pins as
Double Nuts — Do They Work?
Let's compare a typical assembly using one nut and a bolt
How Does the Security Locknut Work?
Security Locknut Last time, we discussed why you may not need a
Why You Shouldn’t Need a Locknut
You shouldn’t need a locknut if the bolted joint is properly
Torque-Tension Testing
The relationship between input torque and tension is the governing principle
Why is it Important to Keep a Bolted Joint Tight?
It is well understood that a fastener will fail if it
How Much Rotation Angle is Needed to Tighten a Fastener?
Hint: not as much as you think. To answer this question, let’s
How Much Does a Bolt Stretch?
Answer: a very small but important amount. In previous posts we discussed
Bolted Joint Torque Explanation and Calculation
We are often asked what torque value should be used with
How is Clamp Force for a Bolt and Nut Assembly Calculated?
Clamp force is what holds a bolted joint together. Published charts are
How Does a Bolted Joint Work?
A standard bolted joint consists of four parts: a fastener, object